Optics letters最新文献_第7页

In situ online deflectometry with synchronized calibration and measurement. 同步校准和测量的原位在线偏转计。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.562040

Ruiyang Wang, Renhao Ge, Daewook Kim, Zekun Zhang, Manwei Chen, Dahai Li, Shouhuan Zhou

引用次数: 0

Experimental investigation of second-harmonic emission pattern from dual-laser-induced air plasma. 双激光诱导空气等离子体二次谐波发射模式的实验研究。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.564688

Shing Yiu Fu, Daopeng Yuan, X-C Zhang

引用次数: 0

Eye-box extension in micro-OLED augmented reality near-eye display with a holographic multi-path optical element combiner. 微oled增强现实近眼显示眼箱扩展与全息多路光学元件组合。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.566486

Sangyoon Kim, Hosung Jeon, Youngjin Jeon, Sehyeon Jeong, Young Sub Kim, Joonku Hahn, Hwi Kim

引用次数: 0

Impact of ultrafast carrier cooling on the open-circuit voltage in a Ag/Bi co-doped CsPbBr₃ NC based photodetector. 超快载流子冷却对银/铋共掺CsPbBr3 NC光电探测器开路电压的影响。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.564552

Chinmay Barman, Rahul Murali, Venugopal Rao Soma, Sai Santosh Kumar Raavi

{"title":"Impact of ultrafast carrier cooling on the open-circuit voltage in a Ag/Bi co-doped CsPbBr3 NC based photodetector.","authors":"Chinmay Barman, Rahul Murali, Venugopal Rao Soma, Sai Santosh Kumar Raavi","doi":"10.1364/OL.564552","DOIUrl":"https://doi.org/10.1364/OL.564552","url":null,"abstract":"Precise control of the hot carrier (HC) relaxation dynamics in halide perovskites is crucial for optimizing the performance of optoelectronic applications requiring efficient energy harvesting and charge transport. Herein, we investigate the effects of Bi, Ag, and Ag/Bi co-doping on HC relaxation in CsPbBr3 nanocrystals (NCs) using femtosecond transient absorption spectroscopy (TAS) and assess their impact on self-powered photodetectors (PDs). Temperature-dependent photoluminescence (PL) and HC energy loss rate analysis reveal an almost twofold reduction in the coupling strength and a threefold enhancement in the longitudinal optical (LO) phonon lifetimes after doping/co-doping. The extended LO phonon lifetime and suppressed coupling strength after Ag and Ag/Bi co-doping enhance the hot phonon bottleneck effect and prolong the HC relaxation process. These findings and improved self-powered PD performance provide a practical strategy for tailoring the HC dynamics in perovskite NCs, paving the way for designing high-efficiency photodetectors and solar cells.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4042-4045"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Practical vectorial mode solver for dielectric waveguides based on finite differences. 实用的基于有限差分的介质波导矢量模式求解器。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.550820

Ergun Simsek

引用次数: 0

Pure quartic traveling wave solutions: a numerical study. 纯四次行波解的数值研究。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563491

Andrea Armaroli

引用次数: 0

Single-shot incoherent three-dimensional imaging for various in-focus situations. 各种聚焦情况下的单镜头非相干三维成像。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.565736

Jawahar Prabhakar Desai, Joseph Rosen

{"title":"Single-shot incoherent three-dimensional imaging for various in-focus situations.","authors":"Jawahar Prabhakar Desai, Joseph Rosen","doi":"10.1364/OL.565736","DOIUrl":"https://doi.org/10.1364/OL.565736","url":null,"abstract":"Incoherent digital holography (IDH) has made 3D imaging possible under fluorescent and other thermal light sources. Typically, different transverse planes can be reconstructed from a single IDH, each plane at a time. However, is it possible to reconstruct a single transverse plane or multiple planes from the same IDH? We herein introduce a novel, to our knowledge, technique for 3D imaging that enables the reconstruction of only a specific transverse plane or multiple planes at a time from the same single-shot recorded pattern according to the user's wishes and by postprocessing this pattern. An object hologram (OH) is recorded while keeping N object subspaces in focus with a phase mask introduced in the system's aperture. The phase mask is a multiplexing of N sets of unique scattering phases multiplied by unique quadratic phases (diffractive lenses) such that each set has a unique focal length. Each set is assigned to a specific subspace of the object space. Each scattering phase is intended to yield a unique pattern of randomly distributed dots on the camera. Any of the nth (1 ≤ n ≤ N) subspace can be reconstructed by deconvolving OH with the corresponding pattern of random dots. Simultaneous reconstruction of 1 ≤ n ≤ N planes in the volume can be obtained by deconvolving OH with the combined pattern of random dots. The multiple features of this single-shot technique make it cost-effective and time-efficient since different situations of the observed scene can be reconstructed from the same IDH without the need to record another IDH. The experimental results for two transverse planes (N = 2) separated along the Z axis are presented in this work.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4062-4065"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Broadband self-phased-locked degenerate continuous-wave optical parametric oscillator. 宽带自锁相简并连续波光学参量振荡器。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.562644

Sukeert, S Chaitanya Kumar, M Ebrahim-Zadeh

引用次数: 0

Development and characterization of a temporal dispersive chromatic confocal microscopy for enhancing real-time three-dimensional cornea imaging. 用于增强实时三维角膜成像的时间色散彩色共聚焦显微镜的开发和表征。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.564590

Zhexi Liu, Xuefang Yang, Jianghao Shen, Xun Chen, Shuhua Yue, Pu Wang

{"title":"Development and characterization of a temporal dispersive chromatic confocal microscopy for enhancing real-time three-dimensional cornea imaging.","authors":"Zhexi Liu, Xuefang Yang, Jianghao Shen, Xun Chen, Shuhua Yue, Pu Wang","doi":"10.1364/OL.564590","DOIUrl":"https://doi.org/10.1364/OL.564590","url":null,"abstract":"Accurate visualization of corneal microstructures with micrometer resolution is critical for diagnosing ocular diseases and guiding treatment strategies. Reflectance confocal microscopy (RCM) was developed for high-resolution three-dimensional (3D) imaging, but its reliance on mechanical scanning limits the 3D imaging speed and may introduce motion artifacts. Here, we demonstrated a time-stretch chromatic confocal microscopy (TSCCM), a single-shot volumetric imaging technique that eliminates mechanical axial scanning by encoding depth information into time-domain swept waveforms. A supercontinuum laser pulse is temporally stretched from picoseconds to 85 ns using free-space angular-chirp-enhanced delay (FACED). FACED enables a low-loss dispersive system that replaces conventional single-mode fiber (SMF), reducing power loss by 1.4-1.8× while achieving a dispersion of 0.55 ns/nm across 650-850 nm. Combined with a chromatic objective, TSCCM enables depth-resolved detection at an A-scan rate of up to 1 MHz. Our system achieves 5 volumes per second with 1-2.2 μm lateral resolution, 346 μm penetration depth in phantoms, and 150 μm in rodent corneas. By decoupling imaging speed from mechanical constraints, TSCCM offers a transformative platform for real-time, high-resolution ophthalmic diagnostics.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3828-3831"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Electrically tunable lens-enabled pixel super-resolution for on-chip holographic microscopy. 用于芯片上全息显微镜的电动可调透镜像素超分辨率。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.560028

Yumin Wu, Jialin Zhang, Guanyu Zhou, Jialiang Qian

{"title":"Electrically tunable lens-enabled pixel super-resolution for on-chip holographic microscopy.","authors":"Yumin Wu, Jialin Zhang, Guanyu Zhou, Jialiang Qian","doi":"10.1364/OL.560028","DOIUrl":"https://doi.org/10.1364/OL.560028","url":null,"abstract":"In this paper, we introduce a novel, to our knowledge, on-chip holographic microscopy system that integrates an electrically tunable lens (ETL) with a super-resolution (SR) algorithm to achieve both a large-field-of-view and high-resolution imaging. A single LED is used as the point light source, which is structured through the electrically tunable system and a microscope objective. By modulating the ETL current, we enable precise z-axis movement of the point light source without the need for mechanical motion. Concurrently, the generated holograms exhibit sub-pixel shifts along the x and y axes. By employing a regularized super-resolution reconstruction algorithm, high-resolution images are obtained simultaneously. We performed full-field-of-view (FOV) reconstruction of a USAF phase resolution target (∼10.03 mm2) and achieved a lateral resolution of 1.38 μm, representing a 1.6-fold improvement over the native sensor pixel size (2.20 μm). The effectiveness of the proposed algorithm for dynamic measurements was demonstrated through real-time observations of paramecia. With its mechanical-free operation, high-throughput capability, and high-resolution imaging, this system-combining ETL and computational SR technology-holds significant potential for a wide range of applications in biological imaging.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4110-4113"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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