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

T staging esophageal tumors with x rays 用X射线对食管肿瘤进行T分期

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-19 DOI: 10.1364/optica.501948

T. Partridge, P. Wolfson, J. Jiang, L. Massimi, A. Astolfo, N. Djurabekova, S. Savvidis, C. J. Maughan Jones, C. K. Hagen, E. Millard, W. Shorrock, R. M. Waltham, I. G. Haig, D. Bate, K. M. A. Ho, H. Mc Bain, A. Wilson, A. Hogan, H. Delaney, A. Liyadipita, A. P. Levine, K. Dawas, B. Mohammadi, Y. A. Qureshi, M. D. Chouhan, S. A. Taylor, M. Mughal, P. R. T. Munro, M. Endrizzi, M. Novelli, et al.

{"title":"T staging esophageal tumors with x rays","authors":"T. Partridge, P. Wolfson, J. Jiang, L. Massimi, A. Astolfo, N. Djurabekova, S. Savvidis, C. J. Maughan Jones, C. K. Hagen, E. Millard, W. Shorrock, R. M. Waltham, I. G. Haig, D. Bate, K. M. A. Ho, H. Mc Bain, A. Wilson, A. Hogan, H. Delaney, A. Liyadipita, A. P. Levine, K. Dawas, B. Mohammadi, Y. A. Qureshi, M. D. Chouhan, S. A. Taylor, M. Mughal, P. R. T. Munro, M. Endrizzi, M. Novelli, et al.","doi":"10.1364/optica.501948","DOIUrl":"https://doi.org/10.1364/optica.501948","url":null,"abstract":"With histopathology results typically taking several days, the ability to stage tumors during interventions could provide a step change in various cancer interventions. X-ray technology has advanced significantly in recent years with the introduction of phase-based imaging methods. These have been adapted for use in standard labs rather than specialized facilities such as synchrotrons, and approaches that enable fast 3D scans with conventional x-ray sources have been developed. This opens the possibility to produce 3D images with enhanced soft tissue contrast at a level of detail comparable to histopathology, in times sufficiently short to be compatible with use during surgical interventions. In this paper we discuss the application of one such approach to human esophagi obtained from esophagectomy interventions. We demonstrate that the image quality is sufficiently high to enable tumor rm T<script type=\"math/tex\">rm T</script> staging based on the x-ray datasets alone. Alongside detection of involved margins with potentially life-saving implications, staging tumors intra-operatively has the potential to change patient pathways, facilitating optimization of therapeutic interventions during the procedure itself. Besides a prospective intra-operative use, the availability of high-quality 3D images of entire esophageal tumors can support histopathological characterization, from enabling “right slice first time” approaches to understanding the histopathology in the full 3D context of the surrounding tumor environment.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"30 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140621604","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

Depth-dependent scaling of axial distances in light microscopy 光学显微镜中轴向距离的深度缩放

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-19 DOI: 10.1364/optica.520595

S. V. Loginov, D. B. Boltje, M. N. F. Hensgens, J. P. Hoogenboom, and E. B. van der Wee

{"title":"Depth-dependent scaling of axial distances in light microscopy","authors":"S. V. Loginov, D. B. Boltje, M. N. F. Hensgens, J. P. Hoogenboom, and E. B. van der Wee","doi":"10.1364/optica.520595","DOIUrl":"https://doi.org/10.1364/optica.520595","url":null,"abstract":"In volume fluorescence microscopy, refractive index matching is essential to minimize aberrations. There are, however, common imaging scenarios where a refractive index mismatch (RIM) between immersion and a sample medium cannot be avoided. This RIM leads to an axial deformation in the acquired image data. Over the years, different axial scaling factors have been proposed to correct for this deformation. While some reports have suggested a depth-dependent axial deformation, so far none of the scaling theories has accounted for a depth-dependent, non-linear scaling. Here, we derive an analytical theory based on determining the leading constructive interference band in the objective lens pupil under RIM. We then use this to calculate a depth-dependent re-scaling factor as a function of the numerical aperture (NA), the refractive indices {n_1}<script type=\"math/tex\">{n_1}</script> and {n_2}<script type=\"math/tex\">{n_2}</script>, and the wavelength lambda<script type=\"math/tex\">lambda</script>. We compare our theoretical results with wave-optics calculations and experimental results obtained using a measurement scheme for different values of NA and RIM. As a benchmark, we recorded multiple datasets in different RIM conditions, and corrected these using our depth-dependent axial scaling theory. Finally, we present an online web applet that visualizes the depth-dependent axial re-scaling for specific optical setups. In addition, we provide software that will help microscopists to correctly re-scale the axial dimension in their imaging data when working under RIM.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"20 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140621516","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

Single-shot characterization of photon indistinguishability with dielectric metasurfaces 介电元表面光子不可分性的单次表征

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-11 DOI: 10.1364/optica.516064

Jihua Zhang, Jinyong Ma, Neuton Li, Shaun Lung, Andrey A. Sukhorukov

{"title":"Single-shot characterization of photon indistinguishability with dielectric metasurfaces","authors":"Jihua Zhang, Jinyong Ma, Neuton Li, Shaun Lung, Andrey A. Sukhorukov","doi":"10.1364/optica.516064","DOIUrl":"https://doi.org/10.1364/optica.516064","url":null,"abstract":"Characterizing the indistinguishability of photons is a key task in quantum photonics, underpinning the tuning and stabilization of the photon sources and thereby increasing the accuracy of quantum operations. The protocols for measuring the degree of indistinguishability conventionally require photon-coincidence measurements at several different time or phase delays, which is a fundamental bottleneck towards fast measurements and real-time monitoring of indistinguishability. Here, we develop a static dielectric metasurface grating without any reconfigurable elements that realizes a tailored multiport transformation in the free-space configuration without the need for phase locking and enables single-shot characterization of the indistinguishability between two photons in multiple degrees of freedom including time, spectrum, spatial modes, and polarization. Topology optimization is employed to design a silicon metasurface with polarization independence, high transmission, and high tolerance to measurement noise. We fabricate the metasurface and experimentally quantify the indistinguishability of photons in the time domain with fidelity over 98.4%. We anticipate that the developed framework based on ultrathin metasurfaces can be further extended for multi-photon states and additional degrees of freedom associated with spatial modalities.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"13 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141867314","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

Ultralow noise microwave synthesis via difference frequency division of a Brillouin resonator 通过布里渊谐振器的差分频率进行超低噪声微波合成

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-08 DOI: 10.1364/optica.515321

William Loh, Dodd Gray, Reed Irion, Owen May, Connor Belanger, Jason Plant, Paul W. Juodawlkis, and Siva Yegnanarayanan

{"title":"Ultralow noise microwave synthesis via difference frequency division of a Brillouin resonator","authors":"William Loh, Dodd Gray, Reed Irion, Owen May, Connor Belanger, Jason Plant, Paul W. Juodawlkis, and Siva Yegnanarayanan","doi":"10.1364/optica.515321","DOIUrl":"https://doi.org/10.1364/optica.515321","url":null,"abstract":"Low phase noise microwave oscillators are at the center of a multitude of applications that span the gamut of photonics and electronics. Within this space, optically derived approaches to microwave frequency synthesis are particularly compelling owing to their unique combination of ultrawideband frequency access and the potential for resiliency to temperature and environmental perturbation via common-mode noise rejection. We demonstrate here an optical frequency divider that uses the 30 terahertz frequency gap between two stimulated Brillouin scattering (SBS) lasers as the basis for frequency division. The resulting microwave signal, centered at 10 GHz frequency, exhibits exceptionally low phase noise levels of −95dBc/Hz<script type=\"math/tex\">{-}{95};{rm dBc/Hz}</script> and −110dBc/Hz<script type=\"math/tex\">{-}{110};{rm dBc/Hz}</script> at 10 Hz and 100 Hz frequency offset, respectively. Moreover, the two SBS lasers, generated from a common fiber resonator, exhibit a high degree of correlated noise cancellation in their frequency difference. We measure 16.1 dB of noise rejection against intentionally applied vibrations, thus showcasing a promising pathway towards portable and robust ultralow noise photonic-microwave synthesis.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"47 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140538121","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

Transport-of-intensity model for single-mask x-ray differential phase contrast imaging 单掩膜 X 射线差分相衬成像的强度传输模型

IF 10.4 1区物理与天体物理

Optica Pub Date : 2024-04-05 DOI: 10.1364/optica.510537

Jingcheng Yuan and Mini Das

{"title":"Transport-of-intensity model for single-mask x-ray differential phase contrast imaging","authors":"Jingcheng Yuan and Mini Das","doi":"10.1364/optica.510537","DOIUrl":"https://doi.org/10.1364/optica.510537","url":null,"abstract":"X-ray phase contrast imaging holds great promise for improving the visibility of light-element materials such as soft tissues and tumors. The single-mask differential phase contrast imaging method stands out as a simple and effective approach to yield differential phase contrast. In this work, we introduce a model for a single-mask phase imaging system based on the transport-of-intensity equation. Our model provides an accessible understanding of signal and contrast formation in single-mask x-ray phase imaging, offering a clear perspective on the image formation process, for example, the origin of alternate bright and dark fringes in phase contrast intensity images. Aided by our model, we present an efficient retrieval method that yields differential phase contrast imagery in a single acquisition step. Our model gives insight into the contrast generation and its dependence on the system geometry and imaging parameters in both the initial intensity image as well as retrieved images. The model validity as well as the proposed retrieval method are demonstrated via both experimental results on a system developed in house as well as Monte Carlo simulations. In conclusion, our work not only provides a model for an intuitive visualization of image formation but also offers a method to optimize differential phase imaging setups, holding tremendous promise for advancing medical diagnostics and other applications.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"56 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140352220","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

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