Pub Date : 2022-01-01DOI: 10.29026/oea.2021.210066
Dongshi Zhang, Xinzhuo Li, Yao Fu, Qinghe Yao, Zhuguo Li, K. Sugioka
{"title":"Liquid vortexes and flows induced by femtosecond laser ablation in liquid governing formation of circular and crisscross LIPSS","authors":"Dongshi Zhang, Xinzhuo Li, Yao Fu, Qinghe Yao, Zhuguo Li, K. Sugioka","doi":"10.29026/oea.2021.210066","DOIUrl":"https://doi.org/10.29026/oea.2021.210066","url":null,"abstract":"","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69515378","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}
Pub Date : 2022-01-01DOI: 10.29026/oea.2022.210024
Qiurong Deng, Jianfeng Chen, Li Long, Baoqin Chen, Huakang Yu, Zhiyuan Li
The Purcell effect is commonly used to increase the spontaneous emission rate by modifying the local environment of a light emitter. Here, we propose a silicon dielectric cuboid nanoantenna for simultaneously enhancing electric dipole (ED), magnetic dipole (MD) and electric quadrupole (EQ) emission. We study the scattering cross section, polarization charge distribution, and electromagnetic field distribution for electromagnetic plane wave illuminating the silicon dielectric cuboid nanoantenna, from which we have identified simultaneous existence of ED, MD and EQ resonance modes in this nanoantenna. We have calculated the Purcell factor of ED, MD and EQ emitters with different moment orientations as a function of radiation wavelength by placing these point radiation source within the nanoantenna, respectively. We find that the resonances wavelengths of the Purcell factor spectrum are matching with the resonance modes in the nanoantenna. Moreover, the maximum Purcell factor of these ED, MD and EQ emitters is 18, 150 and 118 respectively, occurring at the resonance wavelength of 475, 750, and 562 nm, respectively, all within the visible range. The polarization charge distribution features allow us to clarify the excitation and radiation of these resonance modes as the physical origin of large Purcell factor simultaneously occurring in this silicon cuboid nanoantenna. Our theoretical results might help to deeply explore and design the dielectric nanoantenna as an ideal candidate to enhance ED, MD and EQ emission simultaneously with very small loss in the visible range, which is superior than the more popular scheme of plasmonic nanoantenna.
{"title":"Silicon cuboid nanoantenna with simultaneous large Purcell factor for electric dipole, magnetic dipole and electric quadrupole emission","authors":"Qiurong Deng, Jianfeng Chen, Li Long, Baoqin Chen, Huakang Yu, Zhiyuan Li","doi":"10.29026/oea.2022.210024","DOIUrl":"https://doi.org/10.29026/oea.2022.210024","url":null,"abstract":"The Purcell effect is commonly used to increase the spontaneous emission rate by modifying the local environment of a light emitter. Here, we propose a silicon dielectric cuboid nanoantenna for simultaneously enhancing electric dipole (ED), magnetic dipole (MD) and electric quadrupole (EQ) emission. We study the scattering cross section, polarization charge distribution, and electromagnetic field distribution for electromagnetic plane wave illuminating the silicon dielectric cuboid nanoantenna, from which we have identified simultaneous existence of ED, MD and EQ resonance modes in this nanoantenna. We have calculated the Purcell factor of ED, MD and EQ emitters with different moment orientations as a function of radiation wavelength by placing these point radiation source within the nanoantenna, respectively. We find that the resonances wavelengths of the Purcell factor spectrum are matching with the resonance modes in the nanoantenna. Moreover, the maximum Purcell factor of these ED, MD and EQ emitters is 18, 150 and 118 respectively, occurring at the resonance wavelength of 475, 750, and 562 nm, respectively, all within the visible range. The polarization charge distribution features allow us to clarify the excitation and radiation of these resonance modes as the physical origin of large Purcell factor simultaneously occurring in this silicon cuboid nanoantenna. Our theoretical results might help to deeply explore and design the dielectric nanoantenna as an ideal candidate to enhance ED, MD and EQ emission simultaneously with very small loss in the visible range, which is superior than the more popular scheme of plasmonic nanoantenna.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69516645","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}
Pub Date : 2022-01-01DOI: 10.29026/oea.2022.210098
A. Leal-Junior, Letícia M. Avellar, Vitorino Biazi, M. Soares, A. Frizera, C. Marques
{"title":"Multifunctional flexible optical waveguide sensor: on the bioinspiration for ultrasensitive sensors development","authors":"A. Leal-Junior, Letícia M. Avellar, Vitorino Biazi, M. Soares, A. Frizera, C. Marques","doi":"10.29026/oea.2022.210098","DOIUrl":"https://doi.org/10.29026/oea.2022.210098","url":null,"abstract":"","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69518528","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}
Pub Date : 2022-01-01DOI: 10.29026/oea.2022.210121
Shi Bai, Xueli Ren, K. Obata, Yoshihiro Ito, K. Sugioka
{"title":"Label-free trace detection of bio-molecules by liquid-interface assisted surface-enhanced Raman scattering using a microfluidic chip","authors":"Shi Bai, Xueli Ren, K. Obata, Yoshihiro Ito, K. Sugioka","doi":"10.29026/oea.2022.210121","DOIUrl":"https://doi.org/10.29026/oea.2022.210121","url":null,"abstract":"","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69519346","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}
Pub Date : 2022-01-01DOI: 10.29026/oea.2023.220008
Zhuo Wang, Bo Zhang, Dezhi Tan, Jianrong Qiu
Long-term optical data storage (ODS) technology is essential to break the bottleneck of high energy consumption for information storage in the current era of big data. Here, ODS with an ultralong lifetime of 2 10 7 years is attained with single ultrafast laser pulse induced reduction of Eu 3+ ions and tailoring of optical properties inside the Eu-doped aluminosilicate glasses. We demonstrate that the induced local modifications in the glass can stand against the temperature of up to 970 K and strong ultraviolet light irradiation with the power density of 100 kW/cm 2 . Furthermore, the active ions of Eu 2+ exhib-it strong and broadband emission with the full width at half maximum reaching 190 nm, and the photoluminescence (PL) is flexibly tunable in the whole visible region by regulating the alkaline earth metal ions in the glasses. The developed technology and materials will be of great significance in photonic applications such as long-term ODS.
{"title":"Ostensibly perpetual optical data storage in glass with ultra-high stability and tailored photoluminescence","authors":"Zhuo Wang, Bo Zhang, Dezhi Tan, Jianrong Qiu","doi":"10.29026/oea.2023.220008","DOIUrl":"https://doi.org/10.29026/oea.2023.220008","url":null,"abstract":"Long-term optical data storage (ODS) technology is essential to break the bottleneck of high energy consumption for information storage in the current era of big data. Here, ODS with an ultralong lifetime of 2 10 7 years is attained with single ultrafast laser pulse induced reduction of Eu 3+ ions and tailoring of optical properties inside the Eu-doped aluminosilicate glasses. We demonstrate that the induced local modifications in the glass can stand against the temperature of up to 970 K and strong ultraviolet light irradiation with the power density of 100 kW/cm 2 . Furthermore, the active ions of Eu 2+ exhib-it strong and broadband emission with the full width at half maximum reaching 190 nm, and the photoluminescence (PL) is flexibly tunable in the whole visible region by regulating the alkaline earth metal ions in the glasses. The developed technology and materials will be of great significance in photonic applications such as long-term ODS.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69520553","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}
Pub Date : 2022-01-01DOI: 10.29026/oea.2022.200082
Youming Guo, Libo Zhong, Lei Min, Jiaying Wang, Yu Wu, Kele Chen, K. Wei, C. Rao
Adaptive optics techniques have been developed over the past half century and routinely used in large ground-based telescopes for more than 30 years. Although this technique has already been used in various applications, the basic setup and methods have not changed over the past 40 years. In recent years, with the rapid development of artificial intelligence, adaptive optics will be boosted dramatically. In this paper, the recent advances on almost all aspects of adaptive optics based on machine learning are summarized. The state-of-the-art performance of intelligent adaptive optics are reviewed. The potential advantages and deficiencies of intelligent adaptive optics are also discussed.
{"title":"Adaptive optics based on machine learning: a review","authors":"Youming Guo, Libo Zhong, Lei Min, Jiaying Wang, Yu Wu, Kele Chen, K. Wei, C. Rao","doi":"10.29026/oea.2022.200082","DOIUrl":"https://doi.org/10.29026/oea.2022.200082","url":null,"abstract":"Adaptive optics techniques have been developed over the past half century and routinely used in large ground-based telescopes for more than 30 years. Although this technique has already been used in various applications, the basic setup and methods have not changed over the past 40 years. In recent years, with the rapid development of artificial intelligence, adaptive optics will be boosted dramatically. In this paper, the recent advances on almost all aspects of adaptive optics based on machine learning are summarized. The state-of-the-art performance of intelligent adaptive optics are reviewed. The potential advantages and deficiencies of intelligent adaptive optics are also discussed.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69515527","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}
Pub Date : 2022-01-01DOI: 10.29026/oea.2022.210036
Qianliang Li, W. Perrie, Zhao-feng Li, S. Edwardson, G. Dearden
The optical nonlinearity in polycrystalline zinc selenide (ZnSe), excited with 775 nm, 1 kHz femtosecond laser pulses was investigated via the nonlinear transmission with material thickness and the Z scan technique. The measured two photon absorption coefficient β was intensity dependent, inferring that reverse saturated absorption (RSA) is also relevant during high intensity excitation in ZnSe. At low peak intensity I < 5 GW cm –2 , we find β = 3.5 cm GW –1 at 775 nm. The spectral properties of the broad blueish two-photon induced fluorescence (460 nm-500 nm) was studied, displaying self-ab-sorption near the band edge while the upper state lifetime was measured to be τ e ~ 3.3 ns. Stimulated emission was observed when pumping a 0.5 mm thick polycrystalline ZnSe sample within an optical cavity, confirmed by significant line narrowing from Δ λ = 11 nm (cavity blocked) to Δ λ = 2.8 nm at peak wavelength λ p = 475 nm while the upper state lifetime also decreased. These results suggest that with more optimum pumping conditions and crystal cooling, polycrystalline ZnSe might reach lasing threshold via two-photon pumping at λ = 775 nm.
利用随材料厚度的非线性传输和Z扫描技术，研究了775 nm, 1 kHz飞秒激光脉冲激发多晶硒化锌(ZnSe)的光学非线性。测量到的两个光子吸收系数β是强度相关的，推断反向饱和吸收(RSA)也与ZnSe的高强度激发有关。在低峰强度I < 5 GW cm -2时，我们发现β = 3.5 cm GW -1在775 nm。研究了宽蓝色双光子诱导荧光(460 nm ~ 500 nm)的光谱特性，在带边缘附近显示自吸收，上态寿命为τ e ~ 3.3 ns。当在光学腔内泵送0.5 mm厚的多晶ZnSe样品时，观察到受激辐射，在峰值波长λ p = 475 nm处，从Δ λ = 11 nm(腔阻塞)到Δ λ = 2.8 nm的谱线明显收窄，同时上态寿命也有所下降。这些结果表明，在更优的泵浦条件和晶体冷却条件下，多晶ZnSe可以在λ = 775 nm处通过双光子泵浦达到激光阈值。
{"title":"Two-photon absorption and stimulated emission in poly-crystalline Zinc Selenide with femtosecond laser excitation","authors":"Qianliang Li, W. Perrie, Zhao-feng Li, S. Edwardson, G. Dearden","doi":"10.29026/oea.2022.210036","DOIUrl":"https://doi.org/10.29026/oea.2022.210036","url":null,"abstract":"The optical nonlinearity in polycrystalline zinc selenide (ZnSe), excited with 775 nm, 1 kHz femtosecond laser pulses was investigated via the nonlinear transmission with material thickness and the Z scan technique. The measured two photon absorption coefficient β was intensity dependent, inferring that reverse saturated absorption (RSA) is also relevant during high intensity excitation in ZnSe. At low peak intensity I < 5 GW cm –2 , we find β = 3.5 cm GW –1 at 775 nm. The spectral properties of the broad blueish two-photon induced fluorescence (460 nm-500 nm) was studied, displaying self-ab-sorption near the band edge while the upper state lifetime was measured to be τ e ~ 3.3 ns. Stimulated emission was observed when pumping a 0.5 mm thick polycrystalline ZnSe sample within an optical cavity, confirmed by significant line narrowing from Δ λ = 11 nm (cavity blocked) to Δ λ = 2.8 nm at peak wavelength λ p = 475 nm while the upper state lifetime also decreased. These results suggest that with more optimum pumping conditions and crystal cooling, polycrystalline ZnSe might reach lasing threshold via two-photon pumping at λ = 775 nm.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69516594","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}
Pub Date : 2022-01-01DOI: 10.29026/oea.2022.220058
Yaxin Zhang, M. Pu, Jinjin Jin, Xinjian Lu, Yinghui Guo, Jixiang Cai, Fei Zhang, Yingli Ha, Qiong He, Mingfeng Xu, Xiong Li, Xiaoliang Ma, Xiangang Luo
Imaging polarimetry is one of the most widely used analytical technologies for object detection and analysis. To date, most metasurface-based polarimetry techniques are severely limited by narrow operating bandwidths and inevitable crosstalk, leading to detrimental effects on imaging quality and measurement accuracy. Here, we propose a crosstalk-free broadband achromatic full Stokes imaging polarimeter consisting of polarization-sensitive dielectric metalenses, implemented by the principle of polarization-dependent phase optimization. Compared with the single-polarization optimization method, the average crosstalk has been reduced over three times under incident light with arbitrary polarization ranging from 9 μm to 12 μm, which guarantees the measurement of the polarization state more precisely. The experimental results indicate that the designed polarization-sensitive metalenses can effectively eliminate the chromatic aberration with polarization selectivity and negligible crosstalk. The measured average relative errors are 7.08%, 8.62%, 7.15%, and 7.59% at 9.3, 9.6, 10.3, and 10.6 μm, respectively. Simultaneously, the broadband full polarization imaging capability of the device is also verified. This work is expected to have potential applications in wavefront detection, remote sensing
{"title":"Crosstalk-free achromatic full Stokes imaging polarimetry metasurface enabled by polarization-dependent phase optimization","authors":"Yaxin Zhang, M. Pu, Jinjin Jin, Xinjian Lu, Yinghui Guo, Jixiang Cai, Fei Zhang, Yingli Ha, Qiong He, Mingfeng Xu, Xiong Li, Xiaoliang Ma, Xiangang Luo","doi":"10.29026/oea.2022.220058","DOIUrl":"https://doi.org/10.29026/oea.2022.220058","url":null,"abstract":"Imaging polarimetry is one of the most widely used analytical technologies for object detection and analysis. To date, most metasurface-based polarimetry techniques are severely limited by narrow operating bandwidths and inevitable crosstalk, leading to detrimental effects on imaging quality and measurement accuracy. Here, we propose a crosstalk-free broadband achromatic full Stokes imaging polarimeter consisting of polarization-sensitive dielectric metalenses, implemented by the principle of polarization-dependent phase optimization. Compared with the single-polarization optimization method, the average crosstalk has been reduced over three times under incident light with arbitrary polarization ranging from 9 μm to 12 μm, which guarantees the measurement of the polarization state more precisely. The experimental results indicate that the designed polarization-sensitive metalenses can effectively eliminate the chromatic aberration with polarization selectivity and negligible crosstalk. The measured average relative errors are 7.08%, 8.62%, 7.15%, and 7.59% at 9.3, 9.6, 10.3, and 10.6 μm, respectively. Simultaneously, the broadband full polarization imaging capability of the device is also verified. This work is expected to have potential applications in wavefront detection, remote sensing","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69520129","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}
Pub Date : 2022-01-01DOI: 10.29026/oea.2022.210174
W. Buono, A. Forbes
{"title":"Nonlinear optics with structured light","authors":"W. Buono, A. Forbes","doi":"10.29026/oea.2022.210174","DOIUrl":"https://doi.org/10.29026/oea.2022.210174","url":null,"abstract":"","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":null,"pages":null},"PeriodicalIF":14.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69519829","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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