Pub Date : 2023-03-30DOI: 10.1080/09500340.2023.2241568
M. Taghdiri, F. Akbarian, Aezam Dehghani-Firoozabadi, R. Behjatmanesh-Ardakani, S. Banitaba, Hamid Reza Zare-Mehrjardi
Two new organic hybrids of phosphotungstic acid (PTA) were prepared by means of hexamine complexes of nickel and cobalt. The effects of complexes were studied on the photocatalytic activity of PTA. The hybrids were characterized by elemental analyses, FTIR, powder XRD and TGA. The optical band gaps of phosphotungstate-hexamine-nickel and phosphotungstate-hexamine-cobalt were estimated from the diffuse reflectance spectra using the Tauc plots. Dye adsorption and photocatalytic properties of hybrids were tested by decolorizing of model dye solutions methylene blue, rhodamine B and methyl orange. Band gap engineering of the hybrids was investigated using the quantum chemical calculations based on density functional theory through variation in the composition. Theoretical analysis demonstrates how the band gap of these hybrids can be adjusted with variation in their composition. The scavengers were used to suggest photodegradation mechanism. The degradation advanced through the excitation of hybrid by light, followed the oxidation of dye by superoxide radicals.
{"title":"Optical band gap engineering of phosphotungstic acid upon hybridization with hexamine-nickel and -cobalt for solar/visible light photocatalysis: a combined experimental and theoretical approach","authors":"M. Taghdiri, F. Akbarian, Aezam Dehghani-Firoozabadi, R. Behjatmanesh-Ardakani, S. Banitaba, Hamid Reza Zare-Mehrjardi","doi":"10.1080/09500340.2023.2241568","DOIUrl":"https://doi.org/10.1080/09500340.2023.2241568","url":null,"abstract":"Two new organic hybrids of phosphotungstic acid (PTA) were prepared by means of hexamine complexes of nickel and cobalt. The effects of complexes were studied on the photocatalytic activity of PTA. The hybrids were characterized by elemental analyses, FTIR, powder XRD and TGA. The optical band gaps of phosphotungstate-hexamine-nickel and phosphotungstate-hexamine-cobalt were estimated from the diffuse reflectance spectra using the Tauc plots. Dye adsorption and photocatalytic properties of hybrids were tested by decolorizing of model dye solutions methylene blue, rhodamine B and methyl orange. Band gap engineering of the hybrids was investigated using the quantum chemical calculations based on density functional theory through variation in the composition. Theoretical analysis demonstrates how the band gap of these hybrids can be adjusted with variation in their composition. The scavengers were used to suggest photodegradation mechanism. The degradation advanced through the excitation of hybrid by light, followed the oxidation of dye by superoxide radicals.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"349 - 363"},"PeriodicalIF":1.3,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43368125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-30DOI: 10.1080/09500340.2023.2248634
Weidong Shao, Chunxu Zhang, Jinghan Wang, Xiaolin He, Dongxia Wang, Yan Lv, Yue An, Huihui Wang
The classification of White blood cells (WBCs) plays an important role. However, the traditional method of blood smear analysis is laborious. This paper presented a classification method of WBCs based on hyperspectral images and Deep learning (DL). The U-net network was proposed to extract spectral features of WBCs region of interest (ROI) under the pseudo-color images with specific hyperspectral images (420.8, 557.2 and 667.4 nm). For spectral features and the pseudo-colour images of hyperspectral data, attention-aided one and two-dimensional convolutional neural networks were applied to establish WBCs classification models, respectively. The overall average accuracy can reach 94.20% and 92.60%, respectively. A fusion network was constructed to make full use of the spectral and image spatial features, and its classification accuracy reached 96.20%. In terms of overall average accuracy, the fusion network model was the optimal, but for individual types of WBCs, each network had its own unique advantages.
{"title":"Hyperspectral images classification for white blood cells with attention-aided convolutional neural networks and fusion network","authors":"Weidong Shao, Chunxu Zhang, Jinghan Wang, Xiaolin He, Dongxia Wang, Yan Lv, Yue An, Huihui Wang","doi":"10.1080/09500340.2023.2248634","DOIUrl":"https://doi.org/10.1080/09500340.2023.2248634","url":null,"abstract":"The classification of White blood cells (WBCs) plays an important role. However, the traditional method of blood smear analysis is laborious. This paper presented a classification method of WBCs based on hyperspectral images and Deep learning (DL). The U-net network was proposed to extract spectral features of WBCs region of interest (ROI) under the pseudo-color images with specific hyperspectral images (420.8, 557.2 and 667.4 nm). For spectral features and the pseudo-colour images of hyperspectral data, attention-aided one and two-dimensional convolutional neural networks were applied to establish WBCs classification models, respectively. The overall average accuracy can reach 94.20% and 92.60%, respectively. A fusion network was constructed to make full use of the spectral and image spatial features, and its classification accuracy reached 96.20%. In terms of overall average accuracy, the fusion network model was the optimal, but for individual types of WBCs, each network had its own unique advantages.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"364 - 376"},"PeriodicalIF":1.3,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48733936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-30DOI: 10.1080/09500340.2023.2219780
R. Karembera, J. Jena, T. Gibbon
We have demonstrated spectrum sharing and coexistence between a 5G network and a radio telescope without causing interference to the radio astronomer. This was realized by using optical heterodyning between two distributed feedback (DFB) semiconductor lasers as a flex-spectrum photonic RF transmitter. The 5G network was designed to identify and avoid any radio frequency interference (RFI). The generated 5G RF carrier signal is used as the primary RF data carrier for the 5G network. A second RF signal, acting as noise signal, is introduced to the 5G network using an electrical mixer. When the frequencies at the mixer ports are the same, an error signal is generated which triggers the control circuit of the 5G network to correct for the RFI by shifting the primary RF data carrier of the 5G network to a new RF carrier frequency. An impressive RFI correction time of about 3 milliseconds was recorded.
{"title":"Astrophotonics-assisted 5G communication system within radio astronomy areas without introducing RFI effects","authors":"R. Karembera, J. Jena, T. Gibbon","doi":"10.1080/09500340.2023.2219780","DOIUrl":"https://doi.org/10.1080/09500340.2023.2219780","url":null,"abstract":"We have demonstrated spectrum sharing and coexistence between a 5G network and a radio telescope without causing interference to the radio astronomer. This was realized by using optical heterodyning between two distributed feedback (DFB) semiconductor lasers as a flex-spectrum photonic RF transmitter. The 5G network was designed to identify and avoid any radio frequency interference (RFI). The generated 5G RF carrier signal is used as the primary RF data carrier for the 5G network. A second RF signal, acting as noise signal, is introduced to the 5G network using an electrical mixer. When the frequencies at the mixer ports are the same, an error signal is generated which triggers the control circuit of the 5G network to correct for the RFI by shifting the primary RF data carrier of the 5G network to a new RF carrier frequency. An impressive RFI correction time of about 3 milliseconds was recorded.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"327 - 338"},"PeriodicalIF":1.3,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49239854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-30DOI: 10.1080/09500340.2023.2250475
Khedr M. Abohassan, H. S. Ashour, S. Taya, Malek G. Daher
We propose an eight-channel Dense Wavelength Division Demultiplexer (DWDM) device based on one-dimensional photonic crystal (1-D PC) structures defected with lithium niobate (LiNbO3) thin films. The demultiplexer operates in the C-band window (1460–1560 nm), which belongs to the ITU grid for DWDM applications. The desired output wavelength is achieved by applying the proper external electric field to the LiNbO3 layer at various temperatures. The transfer matrix method (TMM) is used to simulate the transmittance spectrum. Efficient output channels with transmittances of about 90% are attained. An excellent quality factor of 30919 and a very small line width of 0.05 nm are exceptional values acquired by the output channels. A very small channel spacing of 0.182 nm is attained without compromising the crosstalk, which reaches a minimum value of −34 dB. The astounding characteristics of the eight channels reveal that the proposed demultiplexer could be a potentially efficient device for DWDM networks.
{"title":"Eight-channel C-Band demultiplexer based on one-dimensional photonic crystals defected with lithium niobate","authors":"Khedr M. Abohassan, H. S. Ashour, S. Taya, Malek G. Daher","doi":"10.1080/09500340.2023.2250475","DOIUrl":"https://doi.org/10.1080/09500340.2023.2250475","url":null,"abstract":"We propose an eight-channel Dense Wavelength Division Demultiplexer (DWDM) device based on one-dimensional photonic crystal (1-D PC) structures defected with lithium niobate (LiNbO3) thin films. The demultiplexer operates in the C-band window (1460–1560 nm), which belongs to the ITU grid for DWDM applications. The desired output wavelength is achieved by applying the proper external electric field to the LiNbO3 layer at various temperatures. The transfer matrix method (TMM) is used to simulate the transmittance spectrum. Efficient output channels with transmittances of about 90% are attained. An excellent quality factor of 30919 and a very small line width of 0.05 nm are exceptional values acquired by the output channels. A very small channel spacing of 0.182 nm is attained without compromising the crosstalk, which reaches a minimum value of −34 dB. The astounding characteristics of the eight channels reveal that the proposed demultiplexer could be a potentially efficient device for DWDM networks.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"377 - 389"},"PeriodicalIF":1.3,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48639914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-30DOI: 10.1080/09500340.2023.2250472
S. A. Carvalho, G. T. Cruz, J. Huguenin, W. F. Balthazar
In this work, we present the relative Fresnel (Goos-Hänchen) phase crossover between the total internal reflection and diffusion regimes by employing polarization tomography. This powerful technique not only enables us to access information about the amplitude and relative phase of the state for total reflection but also facilitates the identification of the transition between these regimes. In all cases, the experimental data are in very good agreement with the theoretical predictions. As an application, we propose the use of the GH phase to implement a phase gate, which is an essential requirement for universal computation. In this context, our system offers a more cost-effective and alternative set up to implement the phase gate and simulate compensator devices.
{"title":"The relative Fresnel goos-Hänchen phase crossover and its applications in quantum computation","authors":"S. A. Carvalho, G. T. Cruz, J. Huguenin, W. F. Balthazar","doi":"10.1080/09500340.2023.2250472","DOIUrl":"https://doi.org/10.1080/09500340.2023.2250472","url":null,"abstract":"In this work, we present the relative Fresnel (Goos-Hänchen) phase crossover between the total internal reflection and diffusion regimes by employing polarization tomography. This powerful technique not only enables us to access information about the amplitude and relative phase of the state for total reflection but also facilitates the identification of the transition between these regimes. In all cases, the experimental data are in very good agreement with the theoretical predictions. As an application, we propose the use of the GH phase to implement a phase gate, which is an essential requirement for universal computation. In this context, our system offers a more cost-effective and alternative set up to implement the phase gate and simulate compensator devices.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"390 - 398"},"PeriodicalIF":1.3,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42759327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-12DOI: 10.1080/09500340.2023.2234506
Jianlei Wang, Lingbo Cai, Liangyue Xie, Jun Liu, Zijun Zhong, Zhi Liu, Jing Han, Xianfeng Meng, Quan‐lan Xiao, Chun Wang
We report on a compact 808 nm diode-pumped passively Q-switched (PQS) Nd:YVO4 laser at 1064 nm with black phosphorus (BP)/ indium selenide (InSe) heterostructure as a saturable absorber (SA). When the transmission of the output coupler (OC) was 30%, the maximum continuous-wave (CW) output power of 10.3 W was obtained with a slope efficiency of 52.4% under the incident pump power of 22 W. The maximum average output power of 3.1 W was obtained at 9.29 W pump power, corresponding to the repetition rate of 598 kHz and the pulse width of 455 ns during pulse operation, further power scaling was limited by the damage threshold of the saturable absorber mirror (SAM). The results sufficiently validated that two-dimensional (2D) BP/InSe heterostructure could be used as an optical modulator for near-IR pulsed laser sources.
{"title":"Nanosecond passively Q-switched Nd: YVO4 laser based on BP/InSe saturable absorber","authors":"Jianlei Wang, Lingbo Cai, Liangyue Xie, Jun Liu, Zijun Zhong, Zhi Liu, Jing Han, Xianfeng Meng, Quan‐lan Xiao, Chun Wang","doi":"10.1080/09500340.2023.2234506","DOIUrl":"https://doi.org/10.1080/09500340.2023.2234506","url":null,"abstract":"We report on a compact 808 nm diode-pumped passively Q-switched (PQS) Nd:YVO4 laser at 1064 nm with black phosphorus (BP)/ indium selenide (InSe) heterostructure as a saturable absorber (SA). When the transmission of the output coupler (OC) was 30%, the maximum continuous-wave (CW) output power of 10.3 W was obtained with a slope efficiency of 52.4% under the incident pump power of 22 W. The maximum average output power of 3.1 W was obtained at 9.29 W pump power, corresponding to the repetition rate of 598 kHz and the pulse width of 455 ns during pulse operation, further power scaling was limited by the damage threshold of the saturable absorber mirror (SAM). The results sufficiently validated that two-dimensional (2D) BP/InSe heterostructure could be used as an optical modulator for near-IR pulsed laser sources.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"322 - 326"},"PeriodicalIF":1.3,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44513492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
In order to obtain the maximum green up-conversion luminescence intensity of Ho3+/Yb3+ co-doped YNbO4, a uniform design and a quadratic general rotation combination design were applied to optimize the doping concentration. The concentration of the rare earth corresponding to the strongest green luminescence intensity was determined to be 10% Ho3+/34.9% Yb3+. Maximum luminous intensity of green light tested under 980 nm excitation was 157373.266, which was close to the theoretical calculated integral intensity value of 157290.825. The variation of the up-conversion luminescence spectra at different power density of the 980 nm laser was characterized. According to the formula fitting, the up-conversion luminescence process is a two-photon process. Meanwhile, the temperature sensing characteristic of the samples has been discussed. Finally, the CIE coordinates were analyzed and calculated to be (0.297, 0.692).
{"title":"Experimental optimization design synthesis and up-conversion luminescence properties of YNbO4:Ho3+/Yb3+","authors":"Sheng Liu, Duan Gao, Li Wang, Wenbin Song, Qianmiao Yu, Yongbo Wen, Xilai Zhang","doi":"10.1080/09500340.2023.2234505","DOIUrl":"https://doi.org/10.1080/09500340.2023.2234505","url":null,"abstract":"In order to obtain the maximum green up-conversion luminescence intensity of Ho3+/Yb3+ co-doped YNbO4, a uniform design and a quadratic general rotation combination design were applied to optimize the doping concentration. The concentration of the rare earth corresponding to the strongest green luminescence intensity was determined to be 10% Ho3+/34.9% Yb3+. Maximum luminous intensity of green light tested under 980 nm excitation was 157373.266, which was close to the theoretical calculated integral intensity value of 157290.825. The variation of the up-conversion luminescence spectra at different power density of the 980 nm laser was characterized. According to the formula fitting, the up-conversion luminescence process is a two-photon process. Meanwhile, the temperature sensing characteristic of the samples has been discussed. Finally, the CIE coordinates were analyzed and calculated to be (0.297, 0.692).","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"310 - 321"},"PeriodicalIF":1.3,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49463088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-12DOI: 10.1080/09500340.2023.2232886
C. Acevedo, Yezid Torres Moreno, J. Guzmán-Sepúlveda, A. Dogariu
Analytical expressions are derived for the spatial coherence function of a speckle field that is generated by the scattering of a Mathieu beam from a random phase mask by following the Fresnel diffraction theory. The general results in the free-space propagation show that the intensity correlation factor is a function of the order of the Mathieu beam, and it evolves spatially as the speckle field propagates. Also, we demonstrate that the intensity correlation factor is non-evolving with the propagation distance in the far-field regime when a lens is placed at the focal distance after the diffuser. The results of this analysis can be used in applications where random fields need to be engineered with structured light beams.
{"title":"Spatial intensity correlations of Mathieu speckle fields","authors":"C. Acevedo, Yezid Torres Moreno, J. Guzmán-Sepúlveda, A. Dogariu","doi":"10.1080/09500340.2023.2232886","DOIUrl":"https://doi.org/10.1080/09500340.2023.2232886","url":null,"abstract":"Analytical expressions are derived for the spatial coherence function of a speckle field that is generated by the scattering of a Mathieu beam from a random phase mask by following the Fresnel diffraction theory. The general results in the free-space propagation show that the intensity correlation factor is a function of the order of the Mathieu beam, and it evolves spatially as the speckle field propagates. Also, we demonstrate that the intensity correlation factor is non-evolving with the propagation distance in the far-field regime when a lens is placed at the focal distance after the diffuser. The results of this analysis can be used in applications where random fields need to be engineered with structured light beams.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"283 - 291"},"PeriodicalIF":1.3,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45723891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-12DOI: 10.1080/09500340.2023.2232897
F. Ahmad, M. Jamil, Park Woo Hyun, M. Luqman, Shagufta Sajjad, M. Baloch
To fabricate and use PDLC-based smart windows, electro-optical (EO) properties such as high transparency at low driving voltages, high contrast ratios (CR), and a wide viewing angle are critical. Thus, there is always a need to either develop new materials with excellent performance or to improve the existing ones. Doping materials (other than the LC and polymeric materials) such as dyes and nanomaterials, can also be used to adjust the EO properties. Sudan black B (SBB) dye and newly available LC material were doped in PDLC material in order to address such a scenario. In our investigation, we found that the doping SBB dye at a weight ratio of 1wt%and LC material with 60 wt% into NOA65 prepolymer PDLC resulted in a great performance of PDLC devices e.g. a high CR response (8.8) and high transmittance even at a low deriving voltage (5 Volt).
{"title":"A study on the design, morphology and electro-optical properties of polymer dispersed liquid crystal films doped with Sudan black B dye","authors":"F. Ahmad, M. Jamil, Park Woo Hyun, M. Luqman, Shagufta Sajjad, M. Baloch","doi":"10.1080/09500340.2023.2232897","DOIUrl":"https://doi.org/10.1080/09500340.2023.2232897","url":null,"abstract":"To fabricate and use PDLC-based smart windows, electro-optical (EO) properties such as high transparency at low driving voltages, high contrast ratios (CR), and a wide viewing angle are critical. Thus, there is always a need to either develop new materials with excellent performance or to improve the existing ones. Doping materials (other than the LC and polymeric materials) such as dyes and nanomaterials, can also be used to adjust the EO properties. Sudan black B (SBB) dye and newly available LC material were doped in PDLC material in order to address such a scenario. In our investigation, we found that the doping SBB dye at a weight ratio of 1wt%and LC material with 60 wt% into NOA65 prepolymer PDLC resulted in a great performance of PDLC devices e.g. a high CR response (8.8) and high transmittance even at a low deriving voltage (5 Volt).","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"299 - 309"},"PeriodicalIF":1.3,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46033543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-12DOI: 10.1080/09500340.2023.2232898
Y. Dogan
Angled surfaces are significant for obtaining complex 3D glass structures to be employed in precise optical components such as light guides. However, it is challenging to fabricate angled structures in glass with high precision. In this study, femtosecond laser irradiation followed by a chemical etching process is used to create a 45-degree angled surface. The roughness values of the angled top and bottom surfaces are compared and the parameters are optimized to achieve maximum surface quality. A 45-degree angled surface with <300 nm roughness and <±0.5° deviation is obtained in a given area of 1 × 1.5 mm2. Using this approach, various complex structures have been successfully fabricated with high quality and precision. Results indicate that this method can be adapted to the high-precision glass manufacturing industry.
{"title":"Ultrafast laser micromachining of angled surfaces in fused silica","authors":"Y. Dogan","doi":"10.1080/09500340.2023.2232898","DOIUrl":"https://doi.org/10.1080/09500340.2023.2232898","url":null,"abstract":"Angled surfaces are significant for obtaining complex 3D glass structures to be employed in precise optical components such as light guides. However, it is challenging to fabricate angled structures in glass with high precision. In this study, femtosecond laser irradiation followed by a chemical etching process is used to create a 45-degree angled surface. The roughness values of the angled top and bottom surfaces are compared and the parameters are optimized to achieve maximum surface quality. A 45-degree angled surface with <300 nm roughness and <±0.5° deviation is obtained in a given area of 1 × 1.5 mm2. Using this approach, various complex structures have been successfully fabricated with high quality and precision. Results indicate that this method can be adapted to the high-precision glass manufacturing industry.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":"70 1","pages":"292 - 298"},"PeriodicalIF":1.3,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47776372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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