IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-10-01 DOI: 10.1364/optica.599441

Clara Magnin,David M. Paganin,Konstantin M. Pavlov,Kaye S. Morgan,Bertrand Faure,Manuel Fernández Martínez,Emmanuel Brun

引用次数: 0

Optical computing with spectrally multiplexed features in complex media 复杂介质中具有频谱复用特性的光计算

IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-10-01 DOI: 10.1364/optica.589581

Xue Dong,Kai Lion,Fei Xia,YoonSeok Baek,Ziao Wang,Niao He,Sylvain Gigan

引用次数: 0

Demonstration of a high- Q subwavelength dielectric nanocylinder 一种高Q次波长介电纳米圆柱体的演示

IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-09-30 DOI: 10.1364/optica.609528

Dayang Li, Simon Klinck Borregaard, Jesper Mørk, Meng Xiong, Yi Yu

{"title":"Demonstration of a high- Q subwavelength dielectric nanocylinder","authors":"Dayang Li, Simon Klinck Borregaard, Jesper Mørk, Meng Xiong, Yi Yu","doi":"10.1364/optica.609528","DOIUrl":"https://doi.org/10.1364/optica.609528","url":null,"abstract":"The development of subwavelength dielectric cavities is essential for reducing the size of photonic devices and enabling dense optoelectronic integration. However, previously demonstrated subwavelength optical cavities exhibit measured Q -factors <400, limiting their applications. Here, we demonstrate a high- Q subwavelength nanocylinder by leveraging bound states in the continuum (BICs). We track BIC modes of different longitudinal orders while maintaining an ultrasmall footprint. We find that the Q -factor initially increases but then saturates at higher orders. By linking quasi-normal-mode perturbation theory with coupled-mode analysis, we clarify the origin of this saturation, estimate the attainable Q -factor limit, and identify an optimized geometry that balances performance with fabrication feasibility. By suspending this design in free space using nanobridges and optimizing the nanofabrication process, we experimentally realize an InP subwavelength nanocylinder with a measured Q -factor exceeding 1000. Compared with a lower- Q substrate-supported counterpart, the suspended high- Q BIC nanocylinder exhibits stronger scattering and photoluminescence signals. Our work provides a route to high- Q optical devices with ultrasmall footprints.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"23 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149086812","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

Compact scalable phase modulator with zero static power consumption for visible integrated photonics 紧凑型可伸缩相位调制器与零静态功耗的可见集成光子学

IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-09-30 DOI: 10.1364/optica.608940

Neil MacFarlane,Firooz Aflatouni

引用次数: 0

On-chip multifunctional perfect vortex beams via monolithic metasurface–VCSEL integration 单片超表面- vcsel集成的片上多功能完美涡旋光束

IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-09-25 DOI: 10.1364/optica.601648

Xianzi Pei,Xiaorui Zhao,Qiuhua Wang,Bo Wu,Zhengtai Ma,Lei Bao,Jun Deng,Peipei Chen,Peinan Ni,Qiang Kan,Yiyang Xie

{"title":"On-chip multifunctional perfect vortex beams via monolithic metasurface–VCSEL integration","authors":"Xianzi Pei,Xiaorui Zhao,Qiuhua Wang,Bo Wu,Zhengtai Ma,Lei Bao,Jun Deng,Peipei Chen,Peinan Ni,Qiang Kan,Yiyang Xie","doi":"10.1364/optica.601648","DOIUrl":"https://doi.org/10.1364/optica.601648","url":null,"abstract":"Integrated vortex beam sources that can generate and manipulate orbital angular momentum (OAM) on a chip are highly desirable for portable quantum technologies and high-dimensional communications. However, conventional optical vortices suffer from the intrinsic correlation between beam radius and topological charge, limiting their practical use. Here, we report a monolithically integrated perfect vortex beam (PVB) source that overcomes this limitation. By encoding beam collimation, axicon conversion, OAM modulation, and Fourier transform into a single dielectric metasurface directly fabricated on a vertical-cavity surface-emitting laser (VCSEL), we achieve on-chip generation of PVBs with a constant ring radius (51.1±2.5µm) independent of topological charge ( l =1,3, and 5). Furthermore, this platform enables multifunctional OAM operations including superimposed PVBs, grafted PVBs with partitioned OAM, and spatially isolated multi-channel PVBs, all within an ultra-compact footprint (>1000× smaller than tabletop systems). This work provides a scalable and versatile platform for chip-scale OAM applications.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"14 1","pages":"2006"},"PeriodicalIF":10.4,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049498","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

Nanoscopy of surface polarization with oblique dipole orientations 斜偶极子取向表面极化的纳米显微镜

IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-09-24 DOI: 10.1364/optica.599585

V. G. M. Duarte,D. A. Miranda,D. F. P. Cunha,M. I. Vasilevskiy,N. Asger Mortensen,A. J. Chaves,N. M. R. Peres

{"title":"Nanoscopy of surface polarization with oblique dipole orientations","authors":"V. G. M. Duarte,D. A. Miranda,D. F. P. Cunha,M. I. Vasilevskiy,N. Asger Mortensen,A. J. Chaves,N. M. R. Peres","doi":"10.1364/optica.599585","DOIUrl":"https://doi.org/10.1364/optica.599585","url":null,"abstract":"The boundary conditions imposed by confined dipoles with arbitrary orientation on surfaces are presented, extending the conventional in-plane (IP) and out-of-plane (OOP) treatments, here applied for planar and cylindrical sheets. Examples include van der Waals heterostructures, thin films of molecular aggregates, and metal–dielectric interfaces. For large dipole strengths, the reflectance peak associated with the dipole oscillation frequency splits into two, revealing the presence of oblique dipoles. The loss function for the dipole sheet reveals pairs of polaritonic resonances originating from the IP and OOP dipole components, accessible through near-field probes. The point-dipole model for s-SNOM shows two distinct peaks, revealing higher sensitivity to dipole obliqueness than reflectance experiments. We apply the model to monolayer WSe 2 , showing that the oblique dipole formulation with a dipole angle of 5.7° yields significant improvements in the qualitative and quantitative agreement with an experiment reported in the literature. This work proposes a unified language for the description of two-dimensional materials, thin films, and interfaces with anisotropic dipolar responses and shows that near-field methods, sensitive to high in-plane momenta, are suitable for measuring such oblique dipoles.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"8 1","pages":"1994"},"PeriodicalIF":10.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149050020","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

Photorefractive tuning seeded by third-harmonic light in a diamond photonic crystal cavity 金刚石光子晶体腔中三次谐波光的光折变调谐

IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-09-22 DOI: 10.1364/optica.607145

Joe Itoi,Elham Zohari,Nicholas J. Sorensen,Sean McNaney,Waleed El-Sayed,Joseph E. Losby,Gustavo O. Luiz,Sigurd Flågan,Paul E. Barclay

{"title":"Photorefractive tuning seeded by third-harmonic light in a diamond photonic crystal cavity","authors":"Joe Itoi,Elham Zohari,Nicholas J. Sorensen,Sean McNaney,Waleed El-Sayed,Joseph E. Losby,Gustavo O. Luiz,Sigurd Flågan,Paul E. Barclay","doi":"10.1364/optica.607145","DOIUrl":"https://doi.org/10.1364/optica.607145","url":null,"abstract":"Single-crystal diamond nanocavities have tremendous potential for use in quantum and nonlinear optical technologies. The ability to precisely control their resonant frequencies is essential for many applications, and in situ tuning is particularly desirable. In this work, we demonstrate deterministic resonance tuning of a diamond nanocavity. We observed a photorefractive effect in concert with the generation of third-harmonic light within the device. This effect blue-shifted the cavity resonance frequency by 20.2 (2) GHz, exceeding the cavity linewidth. The shift corresponded to a fractional change in refractive index of −1.05(1)×10 −4 , and its relaxation occurred over several tens of hours. Although photorefraction is a second-order nonlinear effect and has previously not been observed in diamond owing to its vanishing χ (2) , the observed behavior is consistent with the generation of non-zero χ (2) by electric fields from charged crystal defects. In addition to allowing tuning of diamond cavities for resonant nonlinear and quantum photonics applications, this observation could enable the realization of diamond frequency converters and electro-optical modulators that rely on second-order nonlinearity.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"47 1","pages":"1968"},"PeriodicalIF":10.4,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149020143","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

Vector beams for real-time monitoring of crystalline symmetry on µm length scale 用于微米长度尺度上晶体对称性实时监测的矢量光束

IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-09-22 DOI: 10.1364/optica.608766

Yongbo Lv,Zidu Yu,Haotian Zhang,Liejia Qian,Hao Chu

{"title":"Vector beams for real-time monitoring of crystalline symmetry on µm length scale","authors":"Yongbo Lv,Zidu Yu,Haotian Zhang,Liejia Qian,Hao Chu","doi":"10.1364/optica.608766","DOIUrl":"https://doi.org/10.1364/optica.608766","url":null,"abstract":"Symmetry constrains and determines the physical properties of crystalline solids. Determining crystalline symmetry often requires large-scale diffraction facilities and advanced analysis software and therefore cannot be realized with real-time feedback. Alternatively, optical anisotropy has also been exploited for elucidating the rotation, mirror, and inversion symmetries of solids on smaller tabletop setups. Second-harmonic generation (SHG), in particular, has demonstrated a remarkable sensitivity to subtle changes in these symmetries during phase transitions. To access the full nonlinear susceptibility of a crystal in a cryogenic or vacuum environment, angle-by-angle rotation of the scattering plane of an obliquely incident and outgoing beam in co-ordination with their polarization states is required. This often results in a bulky and wobbly setup, significant feedback latency, and a focal spot size >20µm unsuitable for microscopic samples such as 2D materials. In this work, we make use of vector beams to realize a non-rotating oblique incidence setup, demonstrating a real-time (up to 15 fps) visualization of SHG rotation anisotropy on a sample area of ∼2×2µm 2 . Both the feedback latency and focal spot size represent more than an order of magnitude improvement over previous designs based on a Gaussian beam and mechanically rotating stages. Here, the use of a vector beam greatly simplifies and reduces the cost of nonlinear optical anisotropy measurements, heralding widespread applications of this approach in both research and industrial settings, for example, for strain monitoring and crystal alignment. Our work may also promote broader integration of the structured optical field into solid-state and condensed matter research in the future.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"475 1","pages":"1981"},"PeriodicalIF":10.4,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149020147","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

Customizing a vectorial point spread function for high-dimensional imaging via metalens 自定义矢量点扩展函数，用于通过超透镜进行高维成像

IF 10.4 1区物理与天体物理

Optica Pub Date : 2026-09-21 DOI: 10.1364/optica.610342

Xuanyu Wu,Xuanguang Wu,Xinhao Fan,Sheng Liu,Bingyan Wei,Dandan Wen,Jianlin Zhao,Xuetao Gan,Xianzhong Chen,Peng Li

{"title":"Customizing a vectorial point spread function for high-dimensional imaging via metalens","authors":"Xuanyu Wu,Xuanguang Wu,Xinhao Fan,Sheng Liu,Bingyan Wei,Dandan Wen,Jianlin Zhao,Xuetao Gan,Xianzhong Chen,Peng Li","doi":"10.1364/optica.610342","DOIUrl":"https://doi.org/10.1364/optica.610342","url":null,"abstract":"Metalenses have recently been utilized to unlock new paradigms in miniaturized, integrated imagers for multidimensional imaging by leveraging advanced multiplexing of point spread functions (PSFs). However, further progress remains largely confined to a scalar PSF framework, where spatial and polarization multiplexing faces inherent trade-offs, including limited compactness, severe aberrations, and inter-channel crosstalk. Here, we propose and experimentally demonstrate a metalens-based vectorial PSF architecture that enables high-dimensional imaging through a tailored polarization response along the optical axis. The transition from scalar to vectorial PSF facilitates the encoding of depth, wavelength, and polarization information within two complementary geometric characteristics of the PSF, enabling decoupled retrieval of different combinations of high-dimensional light field information from a single-shot image. As a concrete demonstration of this capability, we showcase two distinct four-dimensional (4D) imaging modalities: one captures 2D intensity, polarization, and wavelength, while the other resolves 2D intensity, depth, and polarization, validating high compatibility without any modification to the optical configuration. Furthermore, we demonstrate its application in characterizing and localizing anisotropic samples. This vectorial PSF framework may open an avenue for advanced PSF engineering in applications ranging from microscopy to machine vision.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"17 1","pages":"1958"},"PeriodicalIF":10.4,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149020148","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

Inverse scattering of absorptive samples via beam propagation. 通过光束传播吸收样品的逆散射。

IF 8.8 1区物理与天体物理

Optica Pub Date : 2026-09-20 Epub Date: 2026-09-11 DOI: 10.1364/optica.599869

Peter Wagenaar, Jeongsoo Kim, Mary E Swartz, Johann K Eberhart, Shwetadwip Chowdhury

{"title":"Inverse scattering of absorptive samples via beam propagation.","authors":"Peter Wagenaar, Jeongsoo Kim, Mary E Swartz, Johann K Eberhart, Shwetadwip Chowdhury","doi":"10.1364/optica.599869","DOIUrl":"10.1364/optica.599869","url":null,"abstract":"Inverse-scattering methods enable label-free, quantitative visualization of a sample's three-dimensional (3D) refractive index (RI), providing intrinsic volumetric contrast. Recent advances have demonstrated successful 3D RI reconstructions in multiple-scattering samples using angle-varying illumination; however, these studies have primarily focused on non-absorptive samples. Here, we extend the multi-slice beam propagation (MSBP) inverse-scattering framework to reconstruct complex-valued RI, encompassing both the sample's conventional RI (real part) and absorptivity (imaginary part). We show that reconstructing complex-valued RI makes the inverse problem ill-posed under angle-varying illumination alone, and that incorporating measurement diversity from both angle-varying illumination and sample defocus enables stable and accurate convergence. Experimental demonstrations were conducted on (1) dyed microsphere samples to characterize the accuracy of the reconstructed RI and absorptivity and (2) diverse scattering and absorptive bio-samples to demonstrate biological utility. These results represent an important step for label-free volumetric imaging in biological tissue, which typically exhibits both scattering and absorption.","PeriodicalId":19515,"journal":{"name":"Optica","volume":"13 9","pages":"1891-1902"},"PeriodicalIF":8.8,"publicationDate":"2026-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13664592/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149195808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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