Optica最新文献_第3页

Experimental anonymous quantum conferencing 实验性匿名量子会议

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-05-07 DOI: 10.1364/optica.514362

Jonathan W. Webb, Joseph Ho, Federico Grasselli, Gláucia Murta, Alexander Pickston, Andres Ulibarrena, Alessandro Fedrizzi

引用次数: 0

Ultrafast temporal phase-resolved nonlinear optical spectroscopy in the molecular frame 分子框架内的超快时间相位分辨非线性光学光谱学

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-05-06 DOI: 10.1364/optica.515959

Siddhant Pandey, Liang Z. Tan, Francis Walz, Varun Makhija, Niranjan Shivaram

{"title":"Ultrafast temporal phase-resolved nonlinear optical spectroscopy in the molecular frame","authors":"Siddhant Pandey, Liang Z. Tan, Francis Walz, Varun Makhija, Niranjan Shivaram","doi":"10.1364/optica.515959","DOIUrl":"https://doi.org/10.1364/optica.515959","url":null,"abstract":"In an ultrafast nonlinear optical interaction, the electric field of the emitted nonlinear signal provides direct access to the induced nonlinear transient polarization or transient currents and thus carries signatures of ultrafast dynamics in a medium. Measurement of the electric field of such signals offers sensitive observables to track ultrafast electron dynamics in various systems. In this work, we resolve the real-time phase of the electric field of a femtosecond third-order nonlinear optical signal in the molecular frame. The electric field emitted from impulsively pre-aligned gas-phase molecules at room temperature, in a degenerate four-wave mixing scheme, is measured using a spectral interferometry technique. The nonlinear signal is measured around a rotational revival to extract its molecular-frame angle dependence from pump-probe time-delay scans. By comparing these measurements for two linear molecules, carbon dioxide and nitrogen, we show that the measured second-order phase parameter (temporal chirp) of the signal is sensitive to the valence electronic symmetry of the molecules, whereas the amplitude of the signal does not show such sensitivity. We compare measurements to theoretical calculations of the chirp observable in the molecular frame. This work is an important step towards using electric field measurements in nonlinear optical spectroscopy to study ultrafast dynamics of electronically excited molecules in the molecular frame.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"51 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141867309","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}

引用次数: 0

Phase-diversity-based wavefront sensing for fluorescence microscopy 基于相位分集的荧光显微镜波前传感技术

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-05-02 DOI: 10.1364/optica.518559

Courtney Johnson, Min Guo, Magdalena C. Schneider, Yijun Su, Satya Khuon, Nikolaj Reiser, Yicong Wu, Patrick La Riviere, Hari Shroff

{"title":"Phase-diversity-based wavefront sensing for fluorescence microscopy","authors":"Courtney Johnson, Min Guo, Magdalena C. Schneider, Yijun Su, Satya Khuon, Nikolaj Reiser, Yicong Wu, Patrick La Riviere, Hari Shroff","doi":"10.1364/optica.518559","DOIUrl":"https://doi.org/10.1364/optica.518559","url":null,"abstract":"Fluorescence microscopy is an invaluable tool in biology, yet its performance is compromised when the wavefront of light is distorted due to optical imperfections or the refractile nature of the sample. Such optical aberrations can dramatically lower the information content of images by degrading the image contrast, resolution, and signal. Adaptive optics (AO) methods can sense and subsequently cancel the aberrated wavefront, but they are too complex, inefficient, slow, or expensive for routine adoption by most labs. Here, we introduce a rapid, sensitive, and robust wavefront sensing scheme based on phase diversity, a method successfully deployed in astronomy but underused in microscopy. Our method enables accurate wavefront sensing to less than λ/35 root mean square (RMS) error with few measurements, and AO with no additional hardware besides a corrective element. After validating the method with simulations, we demonstrate the calibration of a deformable mirror >hundredfold faster than comparable methods (corresponding to wavefront sensing on the ∼100ms scale), and sensing and subsequent correction of severe aberrations (RMS wavefront distortion exceeding λ/2), restoring diffraction-limited imaging on extended biological samples.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"209 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141867308","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}

引用次数: 0

Collaborative publication of related articles puts focus on emerging topics: editorial 社论：合作发表相关文章，关注新兴话题

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-30 DOI: 10.1364/optica.528967

Christophe Dorrer, Prem Kumar, Guifang Li

引用次数: 0

Sub-terahertz optomechanics 次太赫兹光学机械学

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-30 DOI: 10.1364/optica.524431

Jiacheng Xie, Mohan Shen, Hong X. Tang

引用次数: 0

Deep multiband photodetectors enabled by reconfigurable band alignment in van der Waals heterostructures 范德瓦尔斯异质结构中的可重构带排列实现深层多带光电探测器

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-29 DOI: 10.1364/optica.519888

Jinjin Wang, Xiao Fu, Xiaolong Chen, Guanyu Liu, Qixiao Zhao, Hangyu Xu, Fansheng Chen, Jianbin Xu, Sang-Hoon Bae, Jiadong Zhou, Lixin Dong, Wenzhong Bao, Zengfeng Di, Jinshui Miao, Weida Hu

{"title":"Deep multiband photodetectors enabled by reconfigurable band alignment in van der Waals heterostructures","authors":"Jinjin Wang, Xiao Fu, Xiaolong Chen, Guanyu Liu, Qixiao Zhao, Hangyu Xu, Fansheng Chen, Jianbin Xu, Sang-Hoon Bae, Jiadong Zhou, Lixin Dong, Wenzhong Bao, Zengfeng Di, Jinshui Miao, Weida Hu","doi":"10.1364/optica.519888","DOIUrl":"https://doi.org/10.1364/optica.519888","url":null,"abstract":"Multiband recognition technology is being extensively investigated because of the increasing demand for on-chip, multifunctional, and sensitive devices that can distinguish coincident spectral information. Most existing multiband imagers use large arrays of photodetectors to capture different spectral components, from which their spectrum is reconstructed. A single device embedded with a convolutional neural network (CNN) capable of recognizing multiband photons allows the footprints of multiband recognition chips to be scaled down while achieving spectral resolution approaching that of benchtop systems. Here, we report a multiple and broadband photodetector based on 2D/3D van der Waals p/n/p heterostructures [p-germanium (Ge)/n-molybdenum disulfide (MoS2)/p-black phosphorus (bP)] with an electrically tunable transport-mediated spectral photoresponse. The devices show bias-tunable multiband photodetection (visible, short-wave infrared, and mid-wave infrared photoresponse). Further combination with the CNN algorithm enables crosstalk suppression of photoresponse to different wavelengths and high-accuracy blackbody radiation temperature recognition. The deep multiband photodetection strategies demonstrated in this work may open pathways towards the integration of multiband vision for application in on-chip neural network perception.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"26 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141867310","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}

引用次数: 0

Ptychographic imaging with a fiber endoscope via wavelength scanning 纤维内窥镜通过波长扫描进行乳房 X 线造影

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-29 DOI: 10.1364/optica.519965

Kyriakos Skarsoulis, Konstantinos Makris, Christophe Moser, Demetri Psaltis

引用次数: 0

Dose-efficient automatic differentiation for ptychographic reconstruction 用于分层摄影重建的剂量效率自动分辨技术

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-26 DOI: 10.1364/optica.522380

Longlong Wu, Shinjae Yoo, Yong S. Chu, Xiaojing Huang, Ian K. Robinson

引用次数: 0

Synthetic spatial aperture holographic third harmonic generation microscopy 合成空间孔径全息三次谐波发生显微镜

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-23 DOI: 10.1364/optica.521088

Yusef Farah, Gabe Murray, Jeff Field, Maxine Varughese, Lang Wang, Olivier Pinaud, Randy Bartels

引用次数: 0

Orbital-angular-momentum-dependent speckles for spatial mode sorting and demultiplexing 用于空间模式分类和解复用的轨道-角动量相关斑点

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-22 DOI: 10.1364/optica.523846

Rui Ma, Ke Hai Luo, Sushil Pokharel, Zhao Wang, Olga Korotkova, Jing Song He, Wei Li Zhang, Dian Yuan Fan, Anderson S. L. Gomes, and Jun Liu

{"title":"Orbital-angular-momentum-dependent speckles for spatial mode sorting and demultiplexing","authors":"Rui Ma, Ke Hai Luo, Sushil Pokharel, Zhao Wang, Olga Korotkova, Jing Song He, Wei Li Zhang, Dian Yuan Fan, Anderson S. L. Gomes, and Jun Liu","doi":"10.1364/optica.523846","DOIUrl":"https://doi.org/10.1364/optica.523846","url":null,"abstract":"Characterizing the orbital-angular-momentum (OAM) modes is critically important for OAM-encoded data transfer. However, traditional characterizing approaches rely on either complex and precise experimental configurations or complicated prior information processing. In these scenarios, the correlation features of OAM-dependent speckles from the scattering effect have received little attention. Here, we investigate the cross-correlation characteristics of the OAM speckles resulting from a scattering medium and propose an appealing alternative for spatial mode sorting and demultiplexing based on the OAM-dependent speckles. We demonstrate theoretically and experimentally that the cross-correlation operation between two different OAM-dependent speckles can uniformly derive an annulus pattern, whose dimension is determined by the absolute topological charge difference value between the two corresponding OAM modes. Based on this mechanism, the original coherent OAM modes can be easily sorted by implementing the cross-correlation operation between incoherently measured OAM-dependent speckles. To fully capitalize on the orthogonal feature of the OAM-dependent speckles, we also construct OAM mode demultiplexing experiments using a ground glass diffuser, where both 8-bit grayscale and 24-bit RGB OAM-encoded data demultiplexing are successfully demonstrated with superior error rates. Results show that the OAM-dependent speckles, previously treated as a nuisance for practical applications, can be surprisingly utilized as a competitive candidate for OAM mode sorting and demultiplexing, thus opening new directions in optical communication and information processing.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"142 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140637642","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}

引用次数: 0