Pub Date : 2024-07-02DOI: 10.1007/s12596-024-01996-7
K. Dris, M. Benhaliliba, A. Ayeshamariam, A. Roy, K. Kaviyarasu
{"title":"Improving the perovskite solar cell by insertion of methyl ammonium tin oxide and cesium tin chloride as absorber layers: scaps 1d study based on experimental studies","authors":"K. Dris, M. Benhaliliba, A. Ayeshamariam, A. Roy, K. Kaviyarasu","doi":"10.1007/s12596-024-01996-7","DOIUrl":"https://doi.org/10.1007/s12596-024-01996-7","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141687387","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}
Pub Date : 2024-07-02DOI: 10.1088/2040-8986/ad5dcc
Chan Y. Park, Sangbin Lee, Taeho Lee, Jiwon Kang, Jaehyun Jeon, Chaejin Park, Sanmun Kim, Haejun Chung, M. Jang
The proliferation of smartphones and the widespread use of camera modules necessitate CMOS image sensors with high pixel density. The recent competitive race to miniaturize pixels has enabled commercial CMOS sensors with submicron pixels to reach sizes as small as 0.5 μm. However, further downsizing towards subwavelength pixels faces fundamental challenges as the conventional focus-and-filter approach suffers from the diminishing focusing ability of conventional microlens arrays and optical efficiency constraints imposed by absorptive color filters. Nanophotonic color routers have emerged to overcome these challenges via efficient spatiospectral splitting, thereby directing incident light into corresponding pixels. In particular, recent developments in free-form device optimization methods enable the design of highly efficient color routers by exploring a large combinatorial design space, which was previously considered to be intractable with conventional design methods. In this review, we comprehensively introduce a multitude of research achievements in the field of nanophotonic color routers for CMOS image sensors with a special emphasis on their design methodologies.
{"title":"Towards subwavelength pixels: Nanophotonic color routers for ultra-compact high-efficiency CMOS image sensors","authors":"Chan Y. Park, Sangbin Lee, Taeho Lee, Jiwon Kang, Jaehyun Jeon, Chaejin Park, Sanmun Kim, Haejun Chung, M. Jang","doi":"10.1088/2040-8986/ad5dcc","DOIUrl":"https://doi.org/10.1088/2040-8986/ad5dcc","url":null,"abstract":"\u0000 The proliferation of smartphones and the widespread use of camera modules necessitate CMOS image sensors with high pixel density. The recent competitive race to miniaturize pixels has enabled commercial CMOS sensors with submicron pixels to reach sizes as small as 0.5 μm. However, further downsizing towards subwavelength pixels faces fundamental challenges as the conventional focus-and-filter approach suffers from the diminishing focusing ability of conventional microlens arrays and optical efficiency constraints imposed by absorptive color filters. Nanophotonic color routers have emerged to overcome these challenges via efficient spatiospectral splitting, thereby directing incident light into corresponding pixels. In particular, recent developments in free-form device optimization methods enable the design of highly efficient color routers by exploring a large combinatorial design space, which was previously considered to be intractable with conventional design methods. In this review, we comprehensively introduce a multitude of research achievements in the field of nanophotonic color routers for CMOS image sensors with a special emphasis on their design methodologies.","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141684574","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}
Pub Date : 2024-07-02DOI: 10.1007/s12596-024-01997-6
Fekadu Tolessa, M. Alemu, Birke Alemu
{"title":"Dynamics of two degenerate three-level lasers oupled to vacuum reservoir","authors":"Fekadu Tolessa, M. Alemu, Birke Alemu","doi":"10.1007/s12596-024-01997-6","DOIUrl":"https://doi.org/10.1007/s12596-024-01997-6","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141685317","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}
Pub Date : 2024-07-01DOI: 10.1007/s12596-024-01962-3
E. J. Khamees, O. Gençyılmaz
{"title":"Comparison of alternative gold nanoparticles (AuNPs) produced by laser ablation technique for photothermal therapy applications","authors":"E. J. Khamees, O. Gençyılmaz","doi":"10.1007/s12596-024-01962-3","DOIUrl":"https://doi.org/10.1007/s12596-024-01962-3","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141710535","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}
Pub Date : 2024-07-01DOI: 10.1007/s12596-024-01984-x
Chayanika Sharma, P. Badavath, Vijay Kumar
{"title":"Experimental realization of optical communication link with intensity degenerate orbital angular momentum beams","authors":"Chayanika Sharma, P. Badavath, Vijay Kumar","doi":"10.1007/s12596-024-01984-x","DOIUrl":"https://doi.org/10.1007/s12596-024-01984-x","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141716098","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}
Pub Date : 2024-07-01DOI: 10.1007/s12596-024-02001-x
M. A. Ibrar Jahan, Rajini Honnungar, V. L. Nandhini, V. L. Malini, Harpreet Vohra, V. R. Balaji, Sandip Kumar Royc
{"title":"Deciphering the sensory landscape: a comparative analysis of fiber Bragg grating and strain gauge systems in structural health monitoring","authors":"M. A. Ibrar Jahan, Rajini Honnungar, V. L. Nandhini, V. L. Malini, Harpreet Vohra, V. R. Balaji, Sandip Kumar Royc","doi":"10.1007/s12596-024-02001-x","DOIUrl":"https://doi.org/10.1007/s12596-024-02001-x","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141705944","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}
Pub Date : 2024-07-01DOI: 10.1007/s12596-024-01979-8
Muhammad Amin S. Murad, Mujahid Iqbal, A. H. Arnous, A. Biswas, Y. Yıldırım, A. Alshomrani
{"title":"Optical dromions with fractional temporal evolution by enhanced modified tanh expansion approach","authors":"Muhammad Amin S. Murad, Mujahid Iqbal, A. H. Arnous, A. Biswas, Y. Yıldırım, A. Alshomrani","doi":"10.1007/s12596-024-01979-8","DOIUrl":"https://doi.org/10.1007/s12596-024-01979-8","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141713517","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}
Pub Date : 2024-07-01DOI: 10.1007/s12596-024-01971-2
Eman H. M. Abdullah, H. Ahmed, A. Zaghrout, Amal Ibrahim Ahmed Bahnasy, Wafaa B. Rabie
{"title":"Unveiling optical solitons in twin-core couplers with Kerr law of nonlinear refractive index using improved modified extended tanh function method","authors":"Eman H. M. Abdullah, H. Ahmed, A. Zaghrout, Amal Ibrahim Ahmed Bahnasy, Wafaa B. Rabie","doi":"10.1007/s12596-024-01971-2","DOIUrl":"https://doi.org/10.1007/s12596-024-01971-2","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141713153","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}
Pub Date : 2024-07-01DOI: 10.1007/s12596-024-02000-y
Nuha Salem Sultan, Omar Abdulsada Ali
{"title":"Optical and structural characteristics of carbon quantum dots manufacturing by electrochemical method","authors":"Nuha Salem Sultan, Omar Abdulsada Ali","doi":"10.1007/s12596-024-02000-y","DOIUrl":"https://doi.org/10.1007/s12596-024-02000-y","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141712174","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}
Pub Date : 2024-04-25DOI: 10.1088/2040-8986/ad4373
Sonu Kumar Rao, N. Nishchal
We propose a novel technique for multi-image encryption and hiding scheme under optical asymmetric frame work using structured fingerprint phase masks in the gyrator transform domain and three-step phase-shifting digital holography. A structured fingerprint phase mask contains the unique features of fingerprint and structured phase of optical vortex beam, which provides higher security in the cryptosystem. In order to perform the encryption of multiple images, gyrator transform based phase truncation and phase reservation technique has been used in the first level of security whereas three step phase-shifting digital holography has been used to obtain the final ciphertext. This ciphertext is embedded in the host image to perform the watermarking process. In this process, the host is further decomposed into three parts in which anyone from the last two parts can be used for watermark embedding whereas first part is stored as key. The use of polar decomposition in the watermarking process provides additional layer for security. Numerical simulation and experimental results have been presented to support the proposed scheme.
{"title":"Asymmetric multi-image encoding and hiding scheme with structured fingerprint phase masks using gyrator transform and phase-shifting digital holography","authors":"Sonu Kumar Rao, N. Nishchal","doi":"10.1088/2040-8986/ad4373","DOIUrl":"https://doi.org/10.1088/2040-8986/ad4373","url":null,"abstract":"\u0000 We propose a novel technique for multi-image encryption and hiding scheme under optical asymmetric frame work using structured fingerprint phase masks in the gyrator transform domain and three-step phase-shifting digital holography. A structured fingerprint phase mask contains the unique features of fingerprint and structured phase of optical vortex beam, which provides higher security in the cryptosystem. In order to perform the encryption of multiple images, gyrator transform based phase truncation and phase reservation technique has been used in the first level of security whereas three step phase-shifting digital holography has been used to obtain the final ciphertext. This ciphertext is embedded in the host image to perform the watermarking process. In this process, the host is further decomposed into three parts in which anyone from the last two parts can be used for watermark embedding whereas first part is stored as key. The use of polar decomposition in the watermarking process provides additional layer for security. Numerical simulation and experimental results have been presented to support the proposed scheme.","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140654202","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}
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