arXiv - PHYS - Optics最新文献_第10页

Characterization of resonator using confocal laser scanning microscopy and its application in air density sensing 共焦激光扫描显微镜对谐振器的表征及其在空气密度传感中的应用

arXiv - PHYS - Optics Pub Date : 2024-09-07 DOI: arxiv-2409.04823

Ayla Hazrathosseini, Mohit Khurana, Lanyin Luo, Zhenhuan Yi, Alexei Sokolov, Philip R. Hemmer, Marlan O. Scully

{"title":"Characterization of resonator using confocal laser scanning microscopy and its application in air density sensing","authors":"Ayla Hazrathosseini, Mohit Khurana, Lanyin Luo, Zhenhuan Yi, Alexei Sokolov, Philip R. Hemmer, Marlan O. Scully","doi":"arxiv-2409.04823","DOIUrl":"https://doi.org/arxiv-2409.04823","url":null,"abstract":"We present the characterization of the photonic waveguide resonator using\u0000confocal laser scanning microscopy imaging method. Free space TEM$_{00}$ laser\u0000mode is coupled into quasi-TE$_{0}$ waveguide mode using confocal microscopy\u0000via a diffractive grating coupler and vice versa. Our work includes the design,\u0000fabrication, and experimental characterization of a silicon nitride\u0000racetrack-shaped resonator of length ~ 165 um. We illustrate clear evidence of\u0000resonance excitation from the confocal microscope image and demonstrate loaded\u0000Q-factor and finesse ~ 8.2 pm 0.17 * 10^4 and ~ 180 pm 3.5, respectively. We\u0000further demonstrate its one application in air density sensing by measuring the\u0000resonance wavelength shifts with variation in environment air pressure. Our\u0000work impacts spectroscopy, imaging, and sensing applications of single or\u0000ensemble atoms or molecules coupled to photonic devices. Additionally, our\u0000study highlights the potential of confocal microscopy for analyzing photonic\u0000components on large-scale integrated circuits, providing high-resolution\u0000imaging and spectral characterization.","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183564","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}

引用次数: 0

Chalcogenide Metasurfaces Enabling Ultra-Wideband Detectors from Visible to Mid-infrared 实现从可见光到中红外超宽带探测器的卤化物金属表面

arXiv - PHYS - Optics Pub Date : 2024-09-07 DOI: arxiv-2409.04763

Shutao Zhang, Shu An, Mingjin Dai, Qing Yang Steve Wu, Nur Qalishah Adanan, Jun Zhang, Yan Liu, Henry Yit Loong Lee, Nancy Lai Mun Wong, Ady Suwardi, Jun Ding, Robert Edward Simpson, Qi Jie Wang, Joel K. W. Yang, Zhaogang Dong

引用次数: 0

10$^{-15}$-level laser stabilization down to fiber thermal noise limit using balanced photodetection 利用平衡光电检测将 10$^{-15}$ 级激光稳定降至光纤热噪声极限

arXiv - PHYS - Optics Pub Date : 2024-09-07 DOI: arxiv-2409.04681

Igju Jeon, Changmin Ahn, Jungwon Kim

引用次数: 0

Orthonormalization of phase-only basis functions 纯相位基函数的正则化

arXiv - PHYS - Optics Pub Date : 2024-09-06 DOI: arxiv-2409.04565

Daniël W. S. Cox, Ivo M. Vellekoop

引用次数: 0

Inverse-designed dispersive time-modulated nanostructures 反向设计的色散时间调制纳米结构

arXiv - PHYS - Optics Pub Date : 2024-09-06 DOI: arxiv-2409.04551

Puneet Garg, Jan David Fischbach, Aristeidis G. Lamprianidis, Xuchen Wang, Mohammad S. Mirmoosa, Viktar S. Asadchy, Carsten Rockstuhl, Thomas J. Sturges

{"title":"Inverse-designed dispersive time-modulated nanostructures","authors":"Puneet Garg, Jan David Fischbach, Aristeidis G. Lamprianidis, Xuchen Wang, Mohammad S. Mirmoosa, Viktar S. Asadchy, Carsten Rockstuhl, Thomas J. Sturges","doi":"arxiv-2409.04551","DOIUrl":"https://doi.org/arxiv-2409.04551","url":null,"abstract":"Time-modulated nanostructures allow us to control the spatial and temporal\u0000properties of light. The temporal modulation of the nanostructures constitutes\u0000an additional degree of freedom to control their scattering properties on\u0000demand and in a reconfigurable manner. However, these additional parameters\u0000create a vast design space, raising challenges in identifying optimal designs.\u0000Therefore, tools from the field of photonic inverse design must be used to\u0000optimize the degrees of freedom of the system to facilitate predefined optical\u0000responses. To further develop this field, here we introduce a differentiable\u0000transition (T-) matrix-based inverse design framework for dispersive\u0000time-modulated nanostructures. The electron density of the material of the\u0000nanostructures is modulated non-adiabatically as a generic periodic function of\u0000time. Using the inverse design framework, the temporal shape of the electron\u0000density can be manipulated to reach the target functionality. Our computational\u0000framework is exploited, exemplarily, in two instances. First, the decay rate\u0000enhancement of oscillating dipoles near time-modulated spheres is controlled on\u0000demand. Second, using spatiotemporal metasurfaces, a system supporting\u0000asymmetric transmission of light at visible frequencies is designed. Our work\u0000paves the way toward programmable spatiotemporal metasurfaces and space-time\u0000crystals for a future generation of reconfigurable functional photonic devices.","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183568","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}

引用次数: 0

Water-induced high-performance quantum-dot light-emitting diodes 水诱导高性能量子点发光二极管

arXiv - PHYS - Optics Pub Date : 2024-09-06 DOI: arxiv-2409.04283

Wangxiao Jin, Siyu He, Xiuyuan Lu, Xitong Zhu, Dijiong Liu, Guolong Sun, Yanlei Hao, Xiaolin Yan, Yiran Yan, Longjia Wu, Xiongfeng Lin, Wenjun Hou, Weiran Cao, Chuan Liu, Xiaoci Liang, Yuan Gao, Yunzhou Deng, Feng Gao, Yizheng Jin

{"title":"Water-induced high-performance quantum-dot light-emitting diodes","authors":"Wangxiao Jin, Siyu He, Xiuyuan Lu, Xitong Zhu, Dijiong Liu, Guolong Sun, Yanlei Hao, Xiaolin Yan, Yiran Yan, Longjia Wu, Xiongfeng Lin, Wenjun Hou, Weiran Cao, Chuan Liu, Xiaoci Liang, Yuan Gao, Yunzhou Deng, Feng Gao, Yizheng Jin","doi":"arxiv-2409.04283","DOIUrl":"https://doi.org/arxiv-2409.04283","url":null,"abstract":"Solution-processed light-emitting diodes (LEDs) are appealing for their\u0000potential in the low-cost fabrication of large-area devices. However, the\u0000limited performance of solution-processed blue LEDs, particularly their short\u0000operation lifetime, is hindering their practical use in display technologies.\u0000Here, we demonstrate that trace water in device, previously considered\u0000detrimental to most solution-processed LEDs, dramatically enhances the\u0000performance of quantum-dot LEDs (QLEDs). This breakthrough stems from our\u0000comprehensive mechanism investigations into the positive ageing phenomenon, a\u0000long-standing puzzle in the QLED field. Our findings reveal that water\u0000passivation on the surface of electron-transport layers, which are composed of\u0000zinc-oxide-based nanoparticles, improves charge transport and enhances exciton\u0000radiative recombination during device operation. Combined with the advanced\u0000top-emitting architecture, our blue QLEDs achieve a high current efficiency of\u000035.5 cd A-1, a blue index (colour coordinate corrected current efficiency) of\u0000over 470 cd A-1 CIEy-1, and unprecedented stability, with an extrapolated T95\u0000lifetime (at an initial brightness of 1,000 cd m-2) of 287 hours. Our work may\u0000inspire further exploration into surface passivation of nanocrystalline\u0000functional layers, critical for the advancement of emerging solution-processed\u0000optoelectronic and electronic devices.","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183582","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}

引用次数: 0

Selective Passive Tuning of Cavity Resonance by Mode Index Engineering of the Partial Length of a Cavity 通过腔体部分长度的模式指数工程对腔体共振进行选择性被动调谐

arXiv - PHYS - Optics Pub Date : 2024-09-06 DOI: arxiv-2409.04422

Mohit Khurana, Sahar Delfan, Marlan O. Scully

引用次数: 0

Quantum Pair Generation in Nonlinear Metasurfaces with Mixed and Pure Photon Polarizations 具有混合和纯光子偏振的非线性元表面中的量子对生成

arXiv - PHYS - Optics Pub Date : 2024-09-06 DOI: arxiv-2409.04569

Jiho Noh, Tomás Santiago-Cruz, Vitaliy Sultanov, Chloe F. Doiron, Sylvain D. Gennaro, Maria V. Chekhova, Igal Brener

{"title":"Quantum Pair Generation in Nonlinear Metasurfaces with Mixed and Pure Photon Polarizations","authors":"Jiho Noh, Tomás Santiago-Cruz, Vitaliy Sultanov, Chloe F. Doiron, Sylvain D. Gennaro, Maria V. Chekhova, Igal Brener","doi":"arxiv-2409.04569","DOIUrl":"https://doi.org/arxiv-2409.04569","url":null,"abstract":"Metasurfaces are highly effective at manipulating classical light in the\u0000linear regime; however, effectively controlling the polarization of\u0000non-classical light generated from nonlinear resonant metasurfaces remains a\u0000challenge. Here, we present a solution by achieving polarization engineering of\u0000frequency-nondegenerate biphotons emitted via spontaneous parametric\u0000down-conversion (SPDC) in GaAs metasurfaces, where quasi-bound states in the\u0000continuum (qBIC) resonances were utilized for boosting the biphoton generation.\u0000By performing a comprehensive polarization tomography, we demonstrate that the\u0000polarization of the emitted photons directly reflects the qBIC mode's far-field\u0000properties. Furthermore, we show that both the type of qBIC mode and the\u0000symmetry of the meta-atoms can be tailored to control each single-photon\u0000polarization state, and that the subsequent two-photon polarization states are\u0000nearly separable, offering potential applications in the heralded generation of\u0000single photons with adjustable polarization. This work provides a significant\u0000step towards utilizing metasurfaces to not only generate quantum light but also\u0000engineer their polarization, a critical aspect for future quantum technologies.","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183579","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}

引用次数: 0

Theoretical Analysis of the Coherence Properties of a Grating 光栅相干特性的理论分析

arXiv - PHYS - Optics Pub Date : 2024-09-06 DOI: arxiv-2409.04327

Ivan A. Vartanyants

{"title":"Theoretical Analysis of the Coherence Properties of a Grating","authors":"Ivan A. Vartanyants","doi":"arxiv-2409.04327","DOIUrl":"https://doi.org/arxiv-2409.04327","url":null,"abstract":"In this work we aim to clarify theoretically the spatial coherence properties\u0000of the x-ray beam in the focal plane after interaction with a variable line\u0000space (VLS) grating. Assuming that the VLS grating is oriented horizontally, we\u0000are interested in the coherence properties of the beam in the vertical\u0000dispersion direction. We first consider a fully spatially coherent x-ray beam\u0000illuminating the grating. We show that the spatial coherence properties in the\u0000focal plane depend on the bandwidth of the incoming radiation. Being fully\u0000spatially coherent up to the VLS grating, the spatial coherence properties\u0000degrade in the focal plane of the VLS grating. We attribute this to coupling of\u0000the spatial and frequency components in the focal plane of the grating. Next,\u0000we examine partially coherent x-ray beams incident on a VLS grating. We assume\u0000that this radiation is of the Gaussian Schell-model type and obtain an\u0000analytical expression for the spatial coherence properties of the beam in the\u0000focal plane of the VLS grating for such a field. Next, we consider a\u0000monochromator setting that is provided by installing slits in the focal plane\u0000of the VLS grating and examine the degree of coherence in this case. Finally,\u0000we evaluate the degree of coherence at different apertures of the exit slits,\u0000assuming coherent illumination of the grating and a bandwidth of 1.7 10^{-4}.","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183580","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}

引用次数: 0

Adaptive Super-Resolution Imaging Without Prior Knowledge Using a Programmable Spatial-Mode Sorter 利用可编程空间模式分拣机实现无先验知识的自适应超分辨率成像

arXiv - PHYS - Optics Pub Date : 2024-09-06 DOI: arxiv-2409.04323

Itay Ozer, Michael. R. Grace, Pierre-Alexandre Blanche, Saikat Guha

引用次数: 0