Large-scale and high-dimensional permutation operations are important for various applications in, for example, telecommunications and encryption. Here, all-optical diffractive computing is used to execute a set of high-dimensional permutation operations between an input and output field-of-view through layer rotations in a diffractive optical network. In this reconfigurable multiplexed design , every diffractive layer has four orientations: ,
The relationship between the magnetic field direction and the spatial intensity distribution of a radially polarized light passing through a polarized thermal atom ensemble is investigated, which is intuitively presented in a polarization selection absorption effect of thermal atoms. The radially polarized light has a spatial axisymmetric polarization structure, which is set as the probe beam. If the direction of the applied magnetic field is transformed, the absorption of the alignment atomic system to special polarization components of the probe light is changed, resulting in a different absorption ratio. This allows the 3D vector direction of the magnetic field to be inferred by using only the absorption ratio and the projection coefficient of the transmission intensity pattern. Based on this, this work provides a compass based on a thermal atom system, demonstrating a new method for measuring the magnetic field direction in space.
{"title":"Thermal Atomic Compass Based on Radially Polarized Beam","authors":"Guoan Cai, Ke Tian, Zhaoying Wang","doi":"10.1002/lpor.202400465","DOIUrl":"https://doi.org/10.1002/lpor.202400465","url":null,"abstract":"The relationship between the magnetic field direction and the spatial intensity distribution of a radially polarized light passing through a polarized thermal atom ensemble is investigated, which is intuitively presented in a polarization selection absorption effect of thermal atoms. The radially polarized light has a spatial axisymmetric polarization structure, which is set as the probe beam. If the direction of the applied magnetic field is transformed, the absorption of the alignment atomic system to special polarization components of the probe light is changed, resulting in a different absorption ratio. This allows the 3D vector direction of the magnetic field to be inferred by using only the absorption ratio and the projection coefficient of the transmission intensity pattern. Based on this, this work provides a compass based on a thermal atom system, demonstrating a new method for measuring the magnetic field direction in space.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141521426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nanolasers based on emerging dielectric cavities with deep sub-wavelength confinement of light offer a large light-matter coupling rate and near-unity spontaneous emission factor, . These features call for reconsidering the standard approach to identifying the lasing threshold. Here, a new threshold definition is suggested, taking into account the recycling process of photons when is large. This threshold reduces to the classical balance between gain and loss in the limit of macroscopic lasers, but qualitative as well as quantitative differences emerge for nanolasers. In particular, this new threshold identifies the onset of a transition regime, where the quantum statistics of the emitted light evolve into the Poissonian statistics of a coherent state. It is shown that the threshold with photon recycling consistently marks the onset of the change in the second-order intensity correlation, , toward coherent laser light, irrespective of the laser size and down to the case of a single emitter. In contrast, other threshold definitions may well predict lasing in light-emitting diodes. An overview of different threshold definitions proposed in the literature is provided and their predictions are compared when going from macroscopic to microscopic lasers.
{"title":"The Onset of Lasing in Semiconductor Nanolasers","authors":"Marco Saldutti, Yi Yu, Jesper Mørk","doi":"10.1002/lpor.202300840","DOIUrl":"https://doi.org/10.1002/lpor.202300840","url":null,"abstract":"Nanolasers based on emerging dielectric cavities with deep sub-wavelength confinement of light offer a large light-matter coupling rate and near-unity spontaneous emission factor, <span data-altimg=\"/cms/asset/12479e84-ffd9-4901-9d4f-0b1c3c16453a/lpor202300840-math-0001.png\"></span><math altimg=\"urn:x-wiley:18638880:media:lpor202300840:lpor202300840-math-0001\" display=\"inline\" location=\"graphic/lpor202300840-math-0001.png\">\u0000<semantics>\u0000<mi>β</mi>\u0000$beta$</annotation>\u0000</semantics></math>. These features call for reconsidering the standard approach to identifying the lasing threshold. Here, a new threshold definition is suggested, taking into account the recycling process of photons when <span data-altimg=\"/cms/asset/2c05a143-ac21-46a3-9344-499665093373/lpor202300840-math-0002.png\"></span><math altimg=\"urn:x-wiley:18638880:media:lpor202300840:lpor202300840-math-0002\" display=\"inline\" location=\"graphic/lpor202300840-math-0002.png\">\u0000<semantics>\u0000<mi>β</mi>\u0000$beta$</annotation>\u0000</semantics></math> is large. This threshold reduces to the classical balance between gain and loss in the limit of macroscopic lasers, but qualitative as well as quantitative differences emerge for nanolasers. In particular, this new threshold identifies the onset of a transition regime, where the quantum statistics of the emitted light evolve into the Poissonian statistics of a coherent state. It is shown that the threshold with photon recycling consistently marks the onset of the change in the second-order intensity correlation, <span data-altimg=\"/cms/asset/f73e6dfb-bac3-43af-bd8a-e96a1f85a6ac/lpor202300840-math-0003.png\"></span><math altimg=\"urn:x-wiley:18638880:media:lpor202300840:lpor202300840-math-0003\" display=\"inline\" location=\"graphic/lpor202300840-math-0003.png\">\u0000<semantics>\u0000<mrow>\u0000<msup>\u0000<mi>g</mi>\u0000<mrow>\u0000<mo stretchy=\"false\">(</mo>\u0000<mn>2</mn>\u0000<mo stretchy=\"false\">)</mo>\u0000</mrow>\u0000</msup>\u0000<mrow>\u0000<mo stretchy=\"false\">(</mo>\u0000<mn>0</mn>\u0000<mo stretchy=\"false\">)</mo>\u0000</mrow>\u0000</mrow>\u0000$g^{(2)}(0)$</annotation>\u0000</semantics></math>, toward coherent laser light, irrespective of the laser size and down to the case of a single emitter. In contrast, other threshold definitions may well predict lasing in light-emitting diodes. An overview of different threshold definitions proposed in the literature is provided and their predictions are compared when going from macroscopic to microscopic lasers.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141521885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thermochromic materials, known for their unique ability to change optical properties with temperature, have broad applications, including in thermochromic light-emitting diodes (LEDs). However, the scarcity of efficient and stable thermochromic phosphors limits their development. In this study, the development of a novel thermochromic phosphor based on zero-dimensional (0D) inorganic metal halides is reported. The 0D Cs2ZnBr4:Ag+ phosphors show thermally enhanced self-trapped exciton (STE) emission across a wide temperature range from 120 to 300 K with the emitted wavelength changing correspondingly. Temperature-dependent photoluminescence (PL), time-resolved PL, and density functional theory calculations confirm that the thermally enhanced STE emission originates from the passivated defect/traps in Cs2ZnBr4 and the thermally assisted energy transfer from the host to STEs formed by [AgBr4]3– tetrahedron with matrix phonons complementing the energy mismatch. Furthermore, the reversible thermochromic LEDs based on Cs2ZnBr4:Ag+ phosphors are successfully prepared. Overall, these findings provide a future design of high-efficiency thermally enhanced luminescent materials and pave a new way for developing thermochromic materials for functional LED illumination.
{"title":"Thermally Enhanced Self-Trapped Exciton Emission Based on Thermochromic Ag+ doping 0D Zinc-Based Halides","authors":"Meng Wang, Xu Chen, Gaoqiang Li, Fei Zhang, Xinzhen Ji, Zhuangzhuang Ma, Gencai Pan, Mochen Jia, Ying Liu, Yongtao Tian, Xinjian Li, Wen Xu, Chongxin Shan, Zhifeng Shi","doi":"10.1002/lpor.202400752","DOIUrl":"https://doi.org/10.1002/lpor.202400752","url":null,"abstract":"Thermochromic materials, known for their unique ability to change optical properties with temperature, have broad applications, including in thermochromic light-emitting diodes (LEDs). However, the scarcity of efficient and stable thermochromic phosphors limits their development. In this study, the development of a novel thermochromic phosphor based on zero-dimensional (0D) inorganic metal halides is reported. The 0D Cs<sub>2</sub>ZnBr<sub>4</sub>:Ag<sup>+</sup> phosphors show thermally enhanced self-trapped exciton (STE) emission across a wide temperature range from 120 to 300 K with the emitted wavelength changing correspondingly. Temperature-dependent photoluminescence (PL), time-resolved PL, and density functional theory calculations confirm that the thermally enhanced STE emission originates from the passivated defect/traps in Cs<sub>2</sub>ZnBr<sub>4</sub> and the thermally assisted energy transfer from the host to STEs formed by [AgBr<sub>4</sub>]<sup>3–</sup> tetrahedron with matrix phonons complementing the energy mismatch. Furthermore, the reversible thermochromic LEDs based on Cs<sub>2</sub>ZnBr<sub>4</sub>:Ag<sup>+</sup> phosphors are successfully prepared. Overall, these findings provide a future design of high-efficiency thermally enhanced luminescent materials and pave a new way for developing thermochromic materials for functional LED illumination.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141495995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Geng Wang, Rishyashring R. Iyer, Janet E. Sorrells, Edita Aksamitiene, Eric J. Chaney, Carlos A. Renteria, Jaena Park, Jindou Shi, Yi Sun, Stephen A. Boppart, Haohua Tu
Irreproducibility in molecular optical sectioning microscopy has hindered the transformation of acquired digital images from qualitative descriptions to quantitative data. Although numerous tools, metrics, and phantoms have been developed, accurate quantitative comparisons of data from different microscopy systems with diverse acquisition conditions remains a challenge. Here, they develop a simple tool based on an absolute measurement of bulk fluorophore solutions with related Poisson photon statistics, to overcome this obstacle is developed. Demonstrated in a prototypical multiphoton microscope, this tool unifies the unit of pixelated measurement to enable objective comparison of imaging performance across different modalities, microscopes, components/settings, and molecular targets. The application of this tool in live specimens identifies an attractive methodology for quantitative imaging, which rapidly acquires low signal-to-noise frames with either gentle illumination or low-concentration fluorescence labeling.
{"title":"Pixelation with Concentration-Encoded Effective Photons for Quantitative Molecular Optical Sectioning Microscopy","authors":"Geng Wang, Rishyashring R. Iyer, Janet E. Sorrells, Edita Aksamitiene, Eric J. Chaney, Carlos A. Renteria, Jaena Park, Jindou Shi, Yi Sun, Stephen A. Boppart, Haohua Tu","doi":"10.1002/lpor.202400031","DOIUrl":"https://doi.org/10.1002/lpor.202400031","url":null,"abstract":"Irreproducibility in molecular optical sectioning microscopy has hindered the transformation of acquired digital images from qualitative descriptions to quantitative data. Although numerous tools, metrics, and phantoms have been developed, accurate quantitative comparisons of data from different microscopy systems with diverse acquisition conditions remains a challenge. Here, they develop a simple tool based on an absolute measurement of bulk fluorophore solutions with related Poisson photon statistics, to overcome this obstacle is developed. Demonstrated in a prototypical multiphoton microscope, this tool unifies the unit of pixelated measurement to enable objective comparison of imaging performance across different modalities, microscopes, components/settings, and molecular targets. The application of this tool in live specimens identifies an attractive methodology for quantitative imaging, which rapidly acquires low signal-to-noise frames with either gentle illumination or low-concentration fluorescence labeling.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Le Chen, Haoran Ma, Caiyun Liu, Deyu Wang, Zhongyuan Han, Jiajin Tai, Hongwei Liang, Hong Yin
Hexagonal boron nitride (h‐BN) is a van der Waals (vdW) ultrawide bandgap semiconductor with high band‐edge absorption coefficient and chemical/thermal resistance, demonstrating great potential for vacuum ultraviolet (VUV) and UV‐C detection. Hitherto, most of their prevailing applications have exploited epitaxial films and multilayers either grown on substrates or transferred, which tend to form energy‐favorable noncovalent vdW epitaxy. Here, an alternative heteroepitaxy of 2‐inch h‐BN is reported with desirable thickness and vertically aligned vdW layers covalently bonded to sapphire, enabled by activating the inert substrate surface using ion impingement during deposition and the dislocation‐mediated epitaxial transition. The fabricated photodetectors allow efficient photon absorption and carrier collection using a simple planar device design, showing excellent VUV/UV‐C detection performance with ultrafast response of 270 ns/60 µs (rise/decay) and remarkable operating stability until 500 °C. This covalent heteroepitaxy of wafer‐scale h‐BN opens new avenues for optoelectronics and electronics significant to harsh environment applications.
{"title":"Covalent Heteroepitaxy of Large‐Area Vertical Hexagonal Boron Nitride for High‐Temperature VUV Photodetectors","authors":"Le Chen, Haoran Ma, Caiyun Liu, Deyu Wang, Zhongyuan Han, Jiajin Tai, Hongwei Liang, Hong Yin","doi":"10.1002/lpor.202400304","DOIUrl":"https://doi.org/10.1002/lpor.202400304","url":null,"abstract":"Hexagonal boron nitride (<jats:italic>h</jats:italic>‐BN) is a van der Waals (vdW) ultrawide bandgap semiconductor with high band‐edge absorption coefficient and chemical/thermal resistance, demonstrating great potential for vacuum ultraviolet (VUV) and UV‐C detection. Hitherto, most of their prevailing applications have exploited epitaxial films and multilayers either grown on substrates or transferred, which tend to form energy‐favorable noncovalent vdW epitaxy. Here, an alternative heteroepitaxy of 2‐inch <jats:italic>h</jats:italic>‐BN is reported with desirable thickness and vertically aligned vdW layers covalently bonded to sapphire, enabled by activating the inert substrate surface using ion impingement during deposition and the dislocation‐mediated epitaxial transition. The fabricated photodetectors allow efficient photon absorption and carrier collection using a simple planar device design, showing excellent VUV/UV‐C detection performance with ultrafast response of 270 ns/60 µs (rise/decay) and remarkable operating stability until 500 °C. This covalent heteroepitaxy of wafer‐scale <jats:italic>h</jats:italic>‐BN opens new avenues for optoelectronics and electronics significant to harsh environment applications.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141495708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mario Garcia-Lechuga, Noemi Casquero, Jan Siegel, Javier Solis, Raphael Clady, Andong Wang, Olivier Utéza, David Grojo
Using lasers to achieve controlled crystallographic phase changes in silicon with high spatial precision promises new manufacturing solutions in semiconductor technologies, including silicon photonics. Recent demonstrations of improved amorphization thicknesses position ultrafast lasers as an optimum tool to meet current challenges. Here, the literature on silicon transformations is reviewed and complemented with new experimental data. This includes amorphization and ablation response as a function of pulse duration (τ = 13.9 to 134 fs at λ = 800 nm) and laser wavelength (λ = 258 to 4000 nm with τ = 200 fs pulses). For pulse duration-dependent studies on Si(111), the amorphization fluence threshold decreases with shorter durations, emphasizing the significance of non-linear absorption in the range of considered conditions. For wavelength-dependent studies, the amorphization threshold increases sharply from λ = 258 to 1030 nm, followed by near-constant behavior up to λ = 3000 nm. Conversely, the ablation threshold fluence increases in these specified ranges. Differences in the obtained amorphization thicknesses on Si(111) and Si(100) are also discussed, identifying an anomalously large fluence range for amorphization at λ = 258 nm. Finally, the question of the lateral resolution, shown as independent of the interaction nonlinearity is addressed.
{"title":"Amorphization and Ablation of Crystalline Silicon Using Ultrafast Lasers: Dependencies on the Pulse Duration and Irradiation Wavelength","authors":"Mario Garcia-Lechuga, Noemi Casquero, Jan Siegel, Javier Solis, Raphael Clady, Andong Wang, Olivier Utéza, David Grojo","doi":"10.1002/lpor.202301327","DOIUrl":"https://doi.org/10.1002/lpor.202301327","url":null,"abstract":"Using lasers to achieve controlled crystallographic phase changes in silicon with high spatial precision promises new manufacturing solutions in semiconductor technologies, including silicon photonics. Recent demonstrations of improved amorphization thicknesses position ultrafast lasers as an optimum tool to meet current challenges. Here, the literature on silicon transformations is reviewed and complemented with new experimental data. This includes amorphization and ablation response as a function of pulse duration (<i>τ =</i> 13.9 to 134 fs at <i>λ =</i> 800 nm) and laser wavelength (<i>λ =</i> 258 to 4000 nm with <i>τ =</i> 200 fs pulses). For pulse duration-dependent studies on Si(111), the amorphization fluence threshold decreases with shorter durations, emphasizing the significance of non-linear absorption in the range of considered conditions. For wavelength-dependent studies, the amorphization threshold increases sharply from <i>λ =</i> 258 to 1030 nm, followed by near-constant behavior up to <i>λ =</i> 3000 nm. Conversely, the ablation threshold fluence increases in these specified ranges. Differences in the obtained amorphization thicknesses on Si(111) and Si(100) are also discussed, identifying an anomalously large fluence range for amorphization at <i>λ =</i> 258 nm. Finally, the question of the lateral resolution, shown as independent of the interaction nonlinearity is addressed.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141495911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Binbin Zhou, Mattias Rasmussen, Soheil Zibod, Siqi Yan, Narwan Kabir Noori, Oliver Nagy, Yunhong Ding, Simon Jappe Lange, Ksenia Dolgaleva, Robert W. Boyd, Peter Uhd Jepsen
Terahertz (THz) radiation sources based on two-color femtosecond plasmas in air are becoming a mature technology for coherent spectroscopy and strong-field physics across the extended THz range to several tens of THz. The field-resolved detection of such THz transients relies on the third-order nonlinearity of the detection medium. Here, a comparative measurement is demonstrated with air-biased coherent detection (ABCD) and solid-state biased detection (SSBCD) as a novel method to measure the dispersion of the magnitude and phase of the relevant third-order nonlinearity
{"title":"Measurement of the Dispersion of χ(3) of SiO2 and SiN Across the THz and Far-Infrared Frequency Bands","authors":"Binbin Zhou, Mattias Rasmussen, Soheil Zibod, Siqi Yan, Narwan Kabir Noori, Oliver Nagy, Yunhong Ding, Simon Jappe Lange, Ksenia Dolgaleva, Robert W. Boyd, Peter Uhd Jepsen","doi":"10.1002/lpor.202301321","DOIUrl":"https://doi.org/10.1002/lpor.202301321","url":null,"abstract":"Terahertz (THz) radiation sources based on two-color femtosecond plasmas in air are becoming a mature technology for coherent spectroscopy and strong-field physics across the extended THz range to several tens of THz. The field-resolved detection of such THz transients relies on the third-order nonlinearity of the detection medium. Here, a comparative measurement is demonstrated with air-biased coherent detection (ABCD) and solid-state biased detection (SSBCD) as a novel method to measure the dispersion of the magnitude and phase of the relevant third-order nonlinearity <span data-altimg=\"/cms/asset/c63bd32d-19b4-4c99-820a-f92dc61602d1/lpor202301321-math-0003.png\"></span><mjx-container ctxtmenu_counter=\"201\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"><mjx-math aria-hidden=\"true\" location=\"graphic/lpor202301321-math-0003.png\"><mjx-semantics><mjx-mrow data-semantic-children=\"5,24\" data-semantic-content=\"25,0\" data-semantic- data-semantic-role=\"simple function\" data-semantic-speech=\"chi Superscript left parenthesis 3 right parenthesis Baseline left parenthesis 2 omega plus or minus normal upper Omega semicolon omega comma omega comma plus or minus normal upper Omega right parenthesis\" data-semantic-type=\"appl\"><mjx-msup data-semantic-children=\"0,4\" data-semantic- data-semantic-parent=\"26\" data-semantic-role=\"simple function\" data-semantic-type=\"superscript\"><mjx-mi data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"italic\" data-semantic- data-semantic-operator=\"appl\" data-semantic-parent=\"5\" data-semantic-role=\"simple function\" data-semantic-type=\"identifier\"><mjx-c></mjx-c></mjx-mi><mjx-script style=\"vertical-align: 0.363em;\"><mjx-mrow data-semantic-children=\"2\" data-semantic-content=\"1,3\" data-semantic- data-semantic-parent=\"5\" data-semantic-role=\"leftright\" data-semantic-type=\"fenced\" size=\"s\"><mjx-mo data-semantic- data-semantic-operator=\"fenced\" data-semantic-parent=\"4\" data-semantic-role=\"open\" data-semantic-type=\"fence\"><mjx-c></mjx-c></mjx-mo><mjx-mn data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"normal\" data-semantic- data-semantic-parent=\"4\" data-semantic-role=\"integer\" data-semantic-type=\"number\"><mjx-c></mjx-c></mjx-mn><mjx-mo data-semantic- data-semantic-operator=\"fenced\" data-semantic-parent=\"4\" data-semantic-role=\"close\" data-semantic-type=\"fence\"><mjx-c></mjx-c></mjx-mo></mjx-mrow></mjx-script></mjx-msup><mjx-mo data-semantic-added=\"true\" data-semantic- data-semantic-operator=\"appl\" data-semantic-parent=\"26\" data-semantic-role=\"application\" data-semantic-type=\"punctuation\" style=\"margin-left: 0.056em; margin-right: 0.056em;\"><mjx-c></mjx-c></mjx-mo><mjx-mrow data-semantic-children=\"23\" data-semantic-content=\"6,18\" data-semantic- data-semantic-parent=\"26\" data-semantic-role=\"leftright\" data-semantic-type=\"fenced\"><mjx-mo data-semantic- data-semantic-operator=\"fenced\" data-semantic-parent=\"24\" data-semantic-role=\"open\" d","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141489713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuan Deng, Danni Peng, Cheng-Long Shen, Junlu Sun, Guangsong Zheng, Shulong Chang, Yachuan Liang, Jun He, Chong-Xin Shan, Lin Dong
Persistent mechanoluminescence (PML) is highly desirable for its ability to overcome transient-emitting behavior, but its applications are hindered by the limited emission wavelengths. Herein, a universal chemical interlinkage-assisted efficient energy transfer (ET) strategy is introduced to achieve color conversion from green to red in traditional PML materials. A straightforward chemical route to create the RhB@SiO2/SAOED system is established via covalent chemical interlinkage by depositing mesoporous silica-encapsulated Rhodamine B (RhB) nanoparticles (RhB@SiO2) onto SrAl2O4:Eu, Dy (SAOED) particles. The resulting system exhibits a high ET efficiency of 53.5%. The multicolor PML of the RhB@SiO2/SAOED system remains visible to the naked eye for exceeding 28 s after mechanical stimulation. With this unique PML behavior, the RhB@SiO2/SAOED system demonstrates the potential applications ranging from visualized reading activities to multi-mode anticounterfeiting. This universal PML color-conversion strategy provides a new approach to high-performance mechanical light energy-conversion systems and may further inspire more diverse functional applications of classical PML materials.
{"title":"Energy Transfer-Assisted Color Conversion of Persistent Mechanoluminescence in RhB@SiO2/SrAl2O4:Eu,Dy System for Multilevel Information Encryption","authors":"Yuan Deng, Danni Peng, Cheng-Long Shen, Junlu Sun, Guangsong Zheng, Shulong Chang, Yachuan Liang, Jun He, Chong-Xin Shan, Lin Dong","doi":"10.1002/lpor.202400251","DOIUrl":"https://doi.org/10.1002/lpor.202400251","url":null,"abstract":"Persistent mechanoluminescence (PML) is highly desirable for its ability to overcome transient-emitting behavior, but its applications are hindered by the limited emission wavelengths. Herein, a universal chemical interlinkage-assisted efficient energy transfer (ET) strategy is introduced to achieve color conversion from green to red in traditional PML materials. A straightforward chemical route to create the RhB@SiO<sub>2</sub>/SAOED system is established via covalent chemical interlinkage by depositing mesoporous silica-encapsulated Rhodamine B (RhB) nanoparticles (RhB@SiO<sub>2</sub>) onto SrAl<sub>2</sub>O<sub>4</sub>:Eu, Dy (SAOED) particles. The resulting system exhibits a high ET efficiency of 53.5%. The multicolor PML of the RhB@SiO<sub>2</sub>/SAOED system remains visible to the naked eye for exceeding 28 s after mechanical stimulation. With this unique PML behavior, the RhB@SiO<sub>2</sub>/SAOED system demonstrates the potential applications ranging from visualized reading activities to multi-mode anticounterfeiting. This universal PML color-conversion strategy provides a new approach to high-performance mechanical light energy-conversion systems and may further inspire more diverse functional applications of classical PML materials.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141489651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Observing transient events is of great importance for understanding fundamental principles and further controlling the related processes. To surmount the limitations of human vision, special tools are required to detect and record these transient events. Among existing approaches, framing photography stands out by its high spatiotemporal resolution with a 2D field of view and low crosstalk between adjacent frames. This review aims to summarize the technical routes of framing photography and provide a guide for choosing suitable tools for the observation of transient phenomena. The basic principles of framing photography are introduced and then an overview of the main categories by analyzing the system configurations and working principles are presented. Then, the existing devices are classified into mechanical, electrical, and optical framing photography. For each category, representative techniques and applications are discussed. Finally, a prospect for framing photography is provided.
{"title":"Capturing Transient Events in Series: A Review of Framing Photography","authors":"Yunhua Yao, Xianglei Liu, Dalong Qi, Jiali Yao, Chengzhi Jin, Yu He, Zhengqi Huang, Yilin He, Yuecheng Shen, Lianzhong Deng, Zhiyong Wang, Zhenrong Sun, Jinyang Liang, Shian Zhang","doi":"10.1002/lpor.202400219","DOIUrl":"https://doi.org/10.1002/lpor.202400219","url":null,"abstract":"Observing transient events is of great importance for understanding fundamental principles and further controlling the related processes. To surmount the limitations of human vision, special tools are required to detect and record these transient events. Among existing approaches, framing photography stands out by its high spatiotemporal resolution with a 2D field of view and low crosstalk between adjacent frames. This review aims to summarize the technical routes of framing photography and provide a guide for choosing suitable tools for the observation of transient phenomena. The basic principles of framing photography are introduced and then an overview of the main categories by analyzing the system configurations and working principles are presented. Then, the existing devices are classified into mechanical, electrical, and optical framing photography. For each category, representative techniques and applications are discussed. Finally, a prospect for framing photography is provided.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":11.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141495499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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