Optics express最新文献_第9页

Optical parameter design model of hemispherical laser retroreflector arrays for satellite laser ranging. 用于卫星激光测距的半球形激光反射器阵列光学参数设计模型。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.539811

Hui Zhou, Qianyin Zhang, Yue Ma, Song Li

{"title":"Optical parameter design model of hemispherical laser retroreflector arrays for satellite laser ranging.","authors":"Hui Zhou, Qianyin Zhang, Yue Ma, Song Li","doi":"10.1364/OE.539811","DOIUrl":"https://doi.org/10.1364/OE.539811","url":null,"abstract":"A laser retroreflector array (LRA) with multiple retroreflectors is used to directionally reflect an incident laser beam and aims to enhance the received signal strength into laser ranging ground stations. A comprehensive mathematical equation of the received photons is established by modelling the LRA far field diffraction intensity (FFDI) and the satellite velocity aberration position. Based on this received photon model, a novel method on designing the dihedral angle offset and the aperture of retroreflectors is proposed, which maximizes the received photon under the minimal elevation angle of the ground station. Taking the hemispherical structure parameters of Chinese HY-2 satellite LRA and the specification parameters of the Shanghai Astronomical Observatory, the optimal aperture and the dihedral angle offset of the HY-2 laser retroreflectors are 17 mm and 1.6″, respectively. These two optimal optical parameters make the received photon under the elevation angle of 0° reach ∼0.9 count per laser shot. Until now, ∼851,400 successful observations have been successfully obtained by global ground stations since the first launch of HY-2 satellite series in 2011, which guarantees the high-precise orbit determination of HY-2 satellite series.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"41230-41243"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688207","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

Enhancement of far-infrared laser damage threshold in Ge-As-Se glass fiber. 增强 Ge-As-Se 玻璃纤维中的远红外激光损伤阈值。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.542321

Qinnan Fang, Weisheng Xu, Keke Chen, Yuyang Wang, Kai Jiao, Shengchuang Bai, Shixun Dai, Xunsi Wang

{"title":"Enhancement of far-infrared laser damage threshold in Ge-As-Se glass fiber.","authors":"Qinnan Fang, Weisheng Xu, Keke Chen, Yuyang Wang, Kai Jiao, Shengchuang Bai, Shixun Dai, Xunsi Wang","doi":"10.1364/OE.542321","DOIUrl":"https://doi.org/10.1364/OE.542321","url":null,"abstract":"The application of As-Se chalcogenide glasses in high-power laser delivery is hindered by their low damage threshold due to their weak chemical bonds. To solve this, we introduced germanium elements into the As-Se glasses and optimized the composition to raise the glass transition temperature (Tg) and enhance the laser damage threshold (LDT). From the correlation among various parameters including Tg, LDT, and fiber loss, we concluded an optimized composition of Ge23As13.5Se63.5/Ge23As12.5Se64.5 glass. After effective purification and preform extrusion, the glasses were processed into high-quality step-index fiber (core diameter of 300 µm), which exhibits a minimum loss of 0.9 dB/m at 6.9 µm and is capable of withstanding an input CO2 laser power of 19.96 W at a wavelength of 10.6 µm, equal to a power density of 28.25 ± 0.02 kW/cm2 in air. This is nearly 2.3 times higher than that previously reported for Ge-As-Se fibers. This establishes a material foundation for achieving far-infrared high-energy laser systems using Ge-As-Se fibers in the future.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"41593-41602"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688285","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

Enhancement of optomechanical cooling via synthetic magnetism and frequency modulation. 通过合成磁性和频率调制增强光机械冷却。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.541360

Liang Wang, Wei Niu, Shutian Liu, Tie Wang, Shou Zhang, Hong-Fu Wang

引用次数: 0

Ultra-efficient surface grating couplers for chip-to-fiber and chip-to-free-space coupling based on single-beam radiation. 基于单光束辐射的用于芯片到光纤和芯片到自由空间耦合的超高效表面光栅耦合器。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.537342

Alejandro Sánchez-Postigo, Pablo Ginel-Moreno, Jens H Schmid, Abdelfettah Hadij-ElHouati, Alejandro Ortega-Moñux, J Gonzalo Wangüemert-Pérez, Robert Halir, Pavel Cheben, Íñigo Molina-Fernández

{"title":"Ultra-efficient surface grating couplers for chip-to-fiber and chip-to-free-space coupling based on single-beam radiation.","authors":"Alejandro Sánchez-Postigo, Pablo Ginel-Moreno, Jens H Schmid, Abdelfettah Hadij-ElHouati, Alejandro Ortega-Moñux, J Gonzalo Wangüemert-Pérez, Robert Halir, Pavel Cheben, Íñigo Molina-Fernández","doi":"10.1364/OE.537342","DOIUrl":"https://doi.org/10.1364/OE.537342","url":null,"abstract":"Surface grating couplers, such as fiber-chip grating couplers and optical antennas, are fundamental devices in photonic integrated circuits, as they enable the coupling of light between the chip and an external medium. An important metric of surface grating couplers is the coupling efficiency, and high values, greater than -1 dB, are required for applications in quantum technology, light detection and ranging, and optical interconnects. Surface grating couplers typically suffer from radiation loss to the substrate, which significantly limits their coupling efficiency. Here we propose a novel grating-coupling concept that utilizes a high-refractive-index upper cladding to frustrate radiation orders to the substrate by operating in a single-beam diffraction regime. To illustrate this concept, we report the design of an easily fabricable silicon surface grating coupler with an unprecedented coupling efficiency of -0.2 dB to a single-mode optical fiber. Furthermore, the proposed strategy allows us to design an evanescently coupled millimeter-long optical antenna with a coupling efficiency of -0.1 dB to free space. Additionally, an ultra-fast wavelength-tunable beam steering of 0.37°/nm is achieved, which corresponds to more than a 2.5-fold enhancement over comparable silicon antennas. These results represent a pathway for a new set of photonic integrated interfaces for applications in which high-efficiency chip-to-fiber and chip-to-free-space coupling is critical.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"41156-41172"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142687992","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

Implementation of an indoor optical camera communication and localization fusion system using infrared LED markers. 利用红外 LED 标识实现室内光学摄像机通信和定位融合系统。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.538088

Song Song, Po Wu, Yejun Liu, Lun Zhao, Tingwei Wu, Xiangyu Liu, Lei Guo

{"title":"Implementation of an indoor optical camera communication and localization fusion system using infrared LED markers.","authors":"Song Song, Po Wu, Yejun Liu, Lun Zhao, Tingwei Wu, Xiangyu Liu, Lei Guo","doi":"10.1364/OE.538088","DOIUrl":"https://doi.org/10.1364/OE.538088","url":null,"abstract":"Recently, with the development of communication and positioning technologies, progressively higher demands have been placed on the timeliness of indoor communication and the effectiveness of indoor positioning. This paper proposes a low-cost and full-time domain coverage indoor communication and localization fusion system that uses an infrared camera to identify mobile LEDs based on region of interest optical camera communication (RoI-OCC) and calculate three-dimensional (3D) world coordinates based on perspective-n-point (PnP) algorithm. An intermediate delimiter modulation-demodulation method is designed to achieve asynchronous OCC. In processing infrared images, a region-growth-based absolute-directional-mean-difference (RG-ADMD) algorithm is developed to detect infrared targets and recover the scale. Additionally, a local-contrast-method-based Lucas-Kanade (LCM-LK) optical flow estimation algorithm is designed to track infrared targets and determine the centroid coordinates of pixels. In a 5×5 m experimental area, the established system can achieve a target detection recall rate of over 85%, the asynchronous OCC with error-free transmission and an average 3D positioning accuracy of 2.01 cm under a LCM-LK tracking algorithm.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"41361-41375"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688372","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

Bio-optical inversion scheme based on the radiative transfer equation. 基于辐射传递方程的生物光学反演方案。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.508090

Timothy S Moore, Srinivas Kolluru, Alberto Tonizzo, Michael S Twardowski

引用次数: 0

Xenon plasma-focused ion beam milling for fabrication of high-purity, bright single-photon sources operating in the C-band. 氙等离子体聚焦离子束铣削技术，用于制造在 C 波段工作的高纯度、明亮的单光子源。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.534313

Maciej Jaworski, Paweł Mrowiński, Marek G Mikulicz, Paweł Holewa, Laura Zeidler, Marcin Syperek, Elizaveta Semenova, Grzegorz Sęk

{"title":"Xenon plasma-focused ion beam milling for fabrication of high-purity, bright single-photon sources operating in the C-band.","authors":"Maciej Jaworski, Paweł Mrowiński, Marek G Mikulicz, Paweł Holewa, Laura Zeidler, Marcin Syperek, Elizaveta Semenova, Grzegorz Sęk","doi":"10.1364/OE.534313","DOIUrl":"https://doi.org/10.1364/OE.534313","url":null,"abstract":"Electron beam lithography is a standard method for fabricating photonic micro and nanostructures around semiconductor quantum dots (QDs), which are crucial for efficient single and indistinguishable photon sources in quantum information processing. However, this technique is difficult for direct 3D control of the structure shape, complicating the design and enlarging the 2D footprint to suppress in-plane photon leakage while directing photons into the collecting lens aperture. Here, we present an alternative approach to employ xenon plasma-focused ion beam (Xe-PFIB) technology as a reliable method for the 3D shaping of photonic structures containing low-density self-assembled InAs/InP quantum dots emitting in the C-band range of the 3rd telecommunication window. The method is optimized to minimize the possible ion-beam-induced material degradation, which allows exploration of both non-deterministic and deterministic fabrication approaches, resulting in photonic structures naturally shaped as truncated cones. As a demonstration, we fabricate mesas using a heterogeneously integrated structure with a QD membrane atop an aluminum mirror and silicon substrate. Finite-difference time-domain simulations show that the angled sidewalls significantly increase the emission collection efficiency to approx. 0.9 for NA = 0.65. We demonstrate experimentally a high purity of pulsed single-photon emission (∼99%) and a superior extraction efficiency value reported in the C-band of η = 24 ± 4%.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"41089-41101"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688095","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

Polarized adding method of discrete ordinate approximation for ultraviolet-visible and near-infrared radiative transfer. 紫外-可见光和近红外辐射传递的离散序数近似偏振加法。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.495589

Kun Wu, Feng Zhang, Wenwen Li, Fengzi Bao, Yi-Ning Shi

{"title":"Polarized adding method of discrete ordinate approximation for ultraviolet-visible and near-infrared radiative transfer.","authors":"Kun Wu, Feng Zhang, Wenwen Li, Fengzi Bao, Yi-Ning Shi","doi":"10.1364/OE.495589","DOIUrl":"https://doi.org/10.1364/OE.495589","url":null,"abstract":"The polarization characteristics of atmospheric scattering are important for planetary studies and should not be ignored in radiative transfer simulations. In this study, what we believe to be a new vector radiative transfer model called the polarized adding method of discrete ordinate approximation (POLDDA) is proposed for use in remote sensing applications for ultraviolet-visible and near-infrared spectra. The single-layer radiative transfer process and inhomogeneous multi-layer connection are solved using the discrete ordinate method (DOM) and adding methods, respectively. By combining the advantages of DOM and the adding method, the Stokes vector (including the I-, Q-, U-, and V-components) calculated using the supposed new method conforms to the results of PolRadtran/RT3, whether in a Rayleigh scattering atmosphere or a water cloud-dominated case. Moreover, the relative root-mean-square error (RMSE) values of the Stokes vector for the test cases between MYSTIC and the new method or RT3 demonstrate the accuracy of the proposed method. In addition, the apparently new method has a higher computational efficiency than RT3, particularly for an atmosphere with a large scattering optical depth. Unlike RT3, the computation time of the proposed method does not increase with the optical depth of each layer.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"40108-40133"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688357","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

Label-free classification of atherosclerosis plaque via OCT and ultraviolet autofluorescence spectroscopy. 通过 OCT 和紫外自发荧光光谱对动脉粥样硬化斑块进行无标记分类。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.543986

Wangting Zhou, Kezhou Li, Baoyun Yan, Chao Liu, Nan Wang, Yihui Cao, Jianan Li, Rui Zhu, Jianming Guo, Xueli Chen

{"title":"Label-free classification of atherosclerosis plaque via OCT and ultraviolet autofluorescence spectroscopy.","authors":"Wangting Zhou, Kezhou Li, Baoyun Yan, Chao Liu, Nan Wang, Yihui Cao, Jianan Li, Rui Zhu, Jianming Guo, Xueli Chen","doi":"10.1364/OE.543986","DOIUrl":"https://doi.org/10.1364/OE.543986","url":null,"abstract":"We proposed a label-free method for the identification and classification of atherosclerosis plaques by combining optical coherence tomography (OCT) with ultraviolet autofluorescence spectroscopy (uFLS). By aligning the OCT source and the FLS excitation beams, we were able to illuminate the same spot on plaques fixed to the integrated probe, which underwent rotational scanning. This setup enabled the detection of both OCT images and uFLS spectra of the plaques in a co-localized manner. In our approach, a 1300 nm centered swept laser source was utilized for OCT imaging, while a 355 nm laser source, along with a lensed multimode fiber, served as the fluorescence probe for uFLS. The successful acquisition of OCT-uFLS images provided complementary information regarding the tomographic internal structure and biochemical components within the vessels, allowing for comprehensive identification and classification of atherosclerosis plaques. Furthermore, we achieved quantitative measurements and analysis of fluorescence spectra from three main component channels, corresponding to collagen, elastin, and lipid. This enabled us to differentiate atherosclerosis from normal vessel walls and determine the specific types. With the implementation of this dual-modal OCT-uFLS technique, it is possible to facilitate the label-free classification of various histopathological types of atherosclerosis plaques, which holds the potential for both diagnosis and image-guided ablation therapy applications.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"42173-42183"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688394","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

Subwavelength-modulated silicon photonics for low-energy free-electron-photon interactions. 用于低能自由电子-光子相互作用的亚波长调制硅光子学。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.537296

Omer Emre Ates, Benjamin J Slayton, William P Putnam

引用次数: 0