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Detail enhancement for infrared images based on Relativity of Gaussian-Adaptive Bilateral Filter 基于高斯自适应双边滤波器相关性的红外图像细节增强
IF 1.6
OSA Continuum Pub Date : 2021-10-15 DOI: 10.1364/osac.434858
Xiongwei Feng, Zhong-liang Pan
{"title":"Detail enhancement for infrared images based on Relativity of Gaussian-Adaptive Bilateral Filter","authors":"Xiongwei Feng, Zhong-liang Pan","doi":"10.1364/osac.434858","DOIUrl":"https://doi.org/10.1364/osac.434858","url":null,"abstract":"Detail enhancement is the key to the display of infrared image. For the infrared image detail enhancement algorithms, it is very important to present a good visual effect for people effectively. A novel algorithm for detail enhancement of infrared images is proposed in this paper. The method is based on the relativity of Gaussian-adaptive bilateral Filter. The algorithm consists of three steps. The first step is to divide the input image into the base layer and the detail layer by the relativity of Gaussian-adaptive bilateral filter. In the second step, the detail layer is multiplied by the proposed weight coefficient, and the base layer is processed by histogram projection. The third step is to combine the detail layer and the base layer processed in the second step and output it to the 8-bit domain display. Compare with other methods, the new algorithm reduces the running time greatly. The experimental results showed that the proposed algorithm improves the contrast of infrared images effectively.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47114005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adaptive genetic algorithm-based 2 μm intelligent mode-locked fiber laser 基于自适应遗传算法的2 μm智能锁模光纤激光器
IF 1.6
OSA Continuum Pub Date : 2021-10-14 DOI: 10.1364/osac.440960
Xian Anhua, Cao Xue, Liu Yangyu, Yibo Wang, X. Yin, Guangmiao Liu, Wei Zhou, Haotian Wang, Hai-tao Huang, D. Tang, D. Shen
{"title":"Adaptive genetic algorithm-based 2 μm intelligent mode-locked fiber laser","authors":"Xian Anhua, Cao Xue, Liu Yangyu, Yibo Wang, X. Yin, Guangmiao Liu, Wei Zhou, Haotian Wang, Hai-tao Huang, D. Tang, D. Shen","doi":"10.1364/osac.440960","DOIUrl":"https://doi.org/10.1364/osac.440960","url":null,"abstract":"The emission wavelength of an ultrafast laser generated by thulium (Tm)-doped fiber laser (TDFL) ranges from 1.7 to 2.1 μm, covering the water-absorbing band and atmospheric transmission window. In this study, an intelligent Tm-doped mode-locked fiber laser was experimentally demonstrated by combining a genetic algorithm (GA) with an adaptive mutation rate and a nonlinear polarization rotation mode-locked fiber oscillator. A closed-loop feedback system was set up in the experiment, including an oscilloscope, a laptop computer, an electric polarization controller, and a mode-locked fiber oscillator. Based on the aforementioned intelligent design of manual-operation-free, a stable femtosecond level noise-like-mode-locked pulse with an output power of 57.7 mW and a central wavelength of 1973 nm was automatically generated. The evolutionary dynamics of the different parameter structures of the GA-controlled ultrafast TDFL with varying mutation rates were also investigated. This study will pave the way for generating robust ultrafast lasers in the short-wave infrared region.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48121882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Reversible fast to slow-light transition originating in the optical analog of EIA-EIT transformation in optical resonators 由光学谐振器中EIA-EIT变换的光学模拟引起的可逆快到慢光跃迁
IF 1.6
OSA Continuum Pub Date : 2021-10-13 DOI: 10.1364/osac.439380
A. Naweed
{"title":"Reversible fast to slow-light transition originating in the optical analog of EIA-EIT transformation in optical resonators","authors":"A. Naweed","doi":"10.1364/osac.439380","DOIUrl":"https://doi.org/10.1364/osac.439380","url":null,"abstract":"","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48496201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Energy scaling of an erbium-doped mode-locked fiber laser oscillator 掺铒锁模光纤激光振荡器的能量标度
IF 1.6
OSA Continuum Pub Date : 2021-10-11 DOI: 10.1364/osac.441262
I. Zhdanov, A. Bednyakova, V. Volosi, D. Kharenko
{"title":"Energy scaling of an erbium-doped mode-locked fiber laser oscillator","authors":"I. Zhdanov, A. Bednyakova, V. Volosi, D. Kharenko","doi":"10.1364/osac.441262","DOIUrl":"https://doi.org/10.1364/osac.441262","url":null,"abstract":"","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46730013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Three-dimensional coupling structure for a high power laser diode module 高功率激光二极管模块的三维耦合结构
IF 1.6
OSA Continuum Pub Date : 2021-10-11 DOI: 10.1364/osac.439056
Cheng-Mu Tsai, Ken-Yu Cheng, Chia-Hung Yeh, Kuo-Wei Lin, Pin Han
{"title":"Three-dimensional coupling structure for a high power laser diode module","authors":"Cheng-Mu Tsai, Ken-Yu Cheng, Chia-Hung Yeh, Kuo-Wei Lin, Pin Han","doi":"10.1364/osac.439056","DOIUrl":"https://doi.org/10.1364/osac.439056","url":null,"abstract":"A novel scheme involving a three-dimensional (3D) coupling structure is used to build a laser diode (LD) module that utilizes the fiber angle space more completely. Compared with the traditional 2D configuration, the number of LD’s is increased by 4, obtaining an increased efficiency of over 90%. Another advantage is that some costly optical elements used in the traditional polarization combination method are not necessary.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66761901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Demonstration of FMCW LiDAR using a diode laser feedback with PQ:PMMA VBG 采用二极管激光反馈与PQ:PMMA VBG的FMCW激光雷达演示
IF 1.6
OSA Continuum Pub Date : 2021-10-08 DOI: 10.1364/osac.439066
T. Chung, Ruoh-rou Chang, Yung-Hsin Chen
{"title":"Demonstration of FMCW LiDAR using a diode laser feedback with PQ:PMMA VBG","authors":"T. Chung, Ruoh-rou Chang, Yung-Hsin Chen","doi":"10.1364/osac.439066","DOIUrl":"https://doi.org/10.1364/osac.439066","url":null,"abstract":"","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48650915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Non-reciprocal wave retarder based on optical rotators combination 基于旋光器组合的非互易波延迟器
IF 1.6
OSA Continuum Pub Date : 2021-10-08 DOI: 10.1364/osac.439325
Mouhamad Al-Mahmoud, Hristina Hristova, Virginie Coda-Bouchot, A. Rangelov, N. Vitanov, G. Montemezzani
{"title":"Non-reciprocal wave retarder based on optical rotators combination","authors":"Mouhamad Al-Mahmoud, Hristina Hristova, Virginie Coda-Bouchot, A. Rangelov, N. Vitanov, G. Montemezzani","doi":"10.1364/osac.439325","DOIUrl":"https://doi.org/10.1364/osac.439325","url":null,"abstract":"","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48672761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Smartphone-based hybrid 3D profilometry with extended imaging depth range based on binary code and phase-shifting 基于智能手机的混合三维轮廓术，具有基于二进制码和相移的扩展成像深度范围
IF 1.6
OSA Continuum Pub Date : 2021-10-07 DOI: 10.1364/osac.440439
Szu-Yu Chen, Hanlu Wang
{"title":"Smartphone-based hybrid 3D profilometry with extended imaging depth range based on binary code and phase-shifting","authors":"Szu-Yu Chen, Hanlu Wang","doi":"10.1364/osac.440439","DOIUrl":"https://doi.org/10.1364/osac.440439","url":null,"abstract":"","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41626300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Computational analysis of novel high performance optically controlled RF switches for reconfigurable millimeterwave-to-THz circuits 用于可重构毫米波-太赫兹电路的新型高性能光控射频开关的计算分析
IF 1.6
OSA Continuum Pub Date : 2021-10-06 DOI: 10.1364/osac.437912
Yu Shi, Yijing Deng, Jun Ren, Peizhao Li, P. Fay, Lei Liu
{"title":"Computational analysis of novel high performance optically controlled RF switches for reconfigurable millimeterwave-to-THz circuits","authors":"Yu Shi, Yijing Deng, Jun Ren, Peizhao Li, P. Fay, Lei Liu","doi":"10.1364/osac.437912","DOIUrl":"https://doi.org/10.1364/osac.437912","url":null,"abstract":"","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45392930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Bias-sensitive transparent single-element ultrasound transducers using hot-pressed PMN-PT 使用热压PMN-PT的偏置敏感透明单元件超声换能器
IF 1.6
OSA Continuum Pub Date : 2021-10-06 DOI: 10.1364/osac.426779
M. Sobhani, K. Latham, Jeremy A. Brown, R. Zemp
{"title":"Bias-sensitive transparent single-element ultrasound transducers using hot-pressed PMN-PT","authors":"M. Sobhani, K. Latham, Jeremy A. Brown, R. Zemp","doi":"10.1364/osac.426779","DOIUrl":"https://doi.org/10.1364/osac.426779","url":null,"abstract":"Here we introduce electrostrictive hot-pressed lead magnesium niobate (PMN) with low lead titanate (PT) doping as a candidate transparent transducer material. We fabricate transparent high-frequency single-element transducers and characterize their optical, electrical, and acoustic properties. PMN-PT may offer sensitivity advantages over other transducer materials such as lithium niobate owing to its high electromechanical efficiency and bias-voltage sensitivity. The transparency of the fabricated transducer was measured ∼67% at 532 nm wavelength with a maximum electromechanical coefficient of ∼0.68 with a DC bias level of 100 V. The photoacoustic impulse response showed a center frequency of ∼27.6 MHz with a −6 dB bandwidth of ∼61% at a DC bias level of 40 V. Results demonstrate that the new transparent transducers hold promise for future optical-ultrasonic and photoacoustic imaging applications.","PeriodicalId":19750,"journal":{"name":"OSA Continuum","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43881831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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