Optics express最新文献_第8页

Recognizing beam profiles from silicon photonics gratings using a transformer model. 利用变压器模型识别硅光子光栅的光束轮廓。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.539976

Yu Dian Lim, Hong Yu Li, Simon Chun Kiat Goh, Xiangyu Wang, Peng Zhao, Chuan Seng Tan

{"title":"Recognizing beam profiles from silicon photonics gratings using a transformer model.","authors":"Yu Dian Lim, Hong Yu Li, Simon Chun Kiat Goh, Xiangyu Wang, Peng Zhao, Chuan Seng Tan","doi":"10.1364/OE.539976","DOIUrl":"https://doi.org/10.1364/OE.539976","url":null,"abstract":"Over the past decade, there has been extensive work in developing integrated silicon photonics (SiPh) gratings for the optical addressing of trapped ion qubits among the ion trap quantum computing community. However, when viewing beam profiles from gratings using infrared (IR) cameras, it is often difficult to determine the corresponding heights where the beam profiles are located. In this work, we developed transformer models to recognize the corresponding height categories of beam profiles in light from SiPh gratings. The models are trained using two techniques: (1) input patches and (2) input sequence. For the model trained with input patches, the model achieved a recognition accuracy of 0.924. Meanwhile, the model trained with input sequence shows a lower accuracy of 0.892. However, when repeating the model training for 150 cycles, a model trained with input patches shows inconsistent accuracy ranges between 0.289 to 0.959, while the model trained with input sequence shows accuracy values between 0.75 to 0.947. The obtained outcomes can be expanded to various applications, including auto-focusing of light beams and auto-adjustment of the z-axis stage to acquire desired beam profiles.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"41483-41499"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688403","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

Coarsely scannable comb-locked ECDL with fixed local oscillator for CRDS measurement of CO line strength. 可粗略扫描的梳状锁定 ECDL，带固定本地振荡器，用于 CRDS CO 线强度测量。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.534492

Yera Kim, Noh Soo Han, Jeong Sik Lim

引用次数: 0

Electrical liquid crystal integration with VCSEL arrays for tunable orthogonal polarization laser. 用于可调正交偏振激光器的电液晶与 VCSEL 阵列的集成。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.541593

Yucheng Dai, Linlin Shi, Yingmin Song, Yonggang Zou, Jie Fan, Xiyao Fu, Xiaohui Ma

引用次数: 0

Enhanced stimulated Raman and fluorescence imaging by single-frame trained BDN. 通过单帧训练 BDN 增强受激拉曼和荧光成像。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.537581

Xiaobin Tang, Yongqing Zhang, Xiangjie Huang, Hyeon Jeong Lee, Delong Zhang

{"title":"Enhanced stimulated Raman and fluorescence imaging by single-frame trained BDN.","authors":"Xiaobin Tang, Yongqing Zhang, Xiangjie Huang, Hyeon Jeong Lee, Delong Zhang","doi":"10.1364/OE.537581","DOIUrl":"https://doi.org/10.1364/OE.537581","url":null,"abstract":"Hyperspectral and multispectral imaging capture an expanded dimension of information that facilitates discoveries. However, image features are frequently obscured by noise generated from the limited photodamage threshold of the specimen. Although machine learning approaches demonstrate considerable promise in addressing this challenge, they typically require extensive datasets, which can be difficult to obtain. Here, we introduce BiFormer denoising network (BDN), designed to effectively and efficiently extract image features by utilizing both local and global level connections, sparse architectures, and fine-tuning. Experimental results indicate that BDN enhances the quality of stimulated Raman scattering (SRS) images by up to 16-fold in signal-to-noise ratio (SNR), particularly improving subtle features at higher spatial frequencies. Furthermore, BDN is successfully adapted to fluorescence imaging, achieving significant improvements in SNR and order-of-magnitude reduction in exposure time, thereby showcasing its versatility across various imaging modalities. Collectively, BDN exhibits substantial potential for spectroscopic imaging applications in the fields of biomedicine and materials science.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"40593-40604"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688283","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

Plasmonic modulators based on enhanced interaction between graphene and localized transverse-electric plasmonic mode. 基于石墨烯与局部横电等离子模式之间增强的相互作用的等离子调制器。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.539110

Anle Hou, Yulin Wang, Feihu Geng, Yong Zhang, Chengping Huang, Lin Zhou

引用次数: 0

Foundry fabricated compact slow-light Mach-Zehnder modulator and photodetector for on-chip analog photonic computing. 晶圆代工厂制造出用于片上模拟光子计算的紧凑型慢光马赫-泽恩德（Mach-Zehnder）调制器和光电探测器。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.540194

Amir Begović, Meng Zhang, Dennis Yin, Nicholas Gangi, Jiaqi Gu, Z Rena Huang

{"title":"Foundry fabricated compact slow-light Mach-Zehnder modulator and photodetector for on-chip analog photonic computing.","authors":"Amir Begović, Meng Zhang, Dennis Yin, Nicholas Gangi, Jiaqi Gu, Z Rena Huang","doi":"10.1364/OE.540194","DOIUrl":"https://doi.org/10.1364/OE.540194","url":null,"abstract":"This work presents a scaling pathway of on-chip analog photonic computing using foundry-fabricated silicon electro-optic (EO) slow-light Mach-Zehnder modulators (SL-MZMs) and compact Ge photodetectors (PDs) to construct a computing unit. Two SL-MZMs with phase shifter (PS) lengths of 500 μm and 150 μm are studied in this work. The bit resolution, nonlinearity, clock frequency, and power consumption of the photonic computing link, including an RF amplifier, on-chip SL-MZM, and a PD, are thoroughly investigated. The computing link using the SL-MZM with 500 μm has demonstrated a low normalized mean square error (NMSE) of 0.0305 at 8-bit resolution under 3.2 GHz clock frequency. Under the setting of 6-bit resolution at a clock frequency of 800 MHz, high computing accuracy was achieved with a measured NMSE of 0.0018 using the SL-MZM with 150 μm PS length. Using the Google Speed Commands dataset to run a voice keyword spotting task, we determine that 6-bit resolution operating at 3.2 GHz achieves the optimal power-accuracy trade-off. We show a 20× improvement in energy efficiency and a 3.35× improvement in area efficiency compared to NVIDIA V100 GPU [\"Volta: Performance and programmability,\" IEEE Micro38(2), 42 (2018)10.1109/MM.2018.022071134]. These results show that our compact SL-MZMs and PDs promise to scale up photonic computing for practical machine-learning applications.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"42016-42030"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688343","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

750 nm laser based on an BaGa₄Se₇ optical parametric oscillator. 基于 BaGa4Se7 光学参量振荡器的 750 nm 激光器。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.536974

Yunfan Ma, Hui Kong, Hui Shao, Jierui Zou, Boyu Liu, Yicheng Wang, Bo Shi, Fashuai Li, Kejun Wang, Yuwei Chen

{"title":"750 nm laser based on an BaGa4Se7 optical parametric oscillator.","authors":"Yunfan Ma, Hui Kong, Hui Shao, Jierui Zou, Boyu Liu, Yicheng Wang, Bo Shi, Fashuai Li, Kejun Wang, Yuwei Chen","doi":"10.1364/OE.536974","DOIUrl":"https://doi.org/10.1364/OE.536974","url":null,"abstract":"The red edge effect of plants is extensively utilized in vegetation remote sensing, particularly by applying hyperspectral LiDAR (HSL) technology. This technology effectively captures spectral information from targets together with range measurements by processing recorded waveforms in the red-edge spectral bands. Despite its widespread use, there is still potential for enhancing the tuning accuracy and the energy output of each channel. What we believe to be a novel nonlinear crystal, BaGa4Se7 (BGSe), has been employed to achieve laser output in the red edge spectral band with a wide tuning range and high tuning precision for the first time. Successful generation of laser radiation at 1512 nm was achieved, with an angular tuning resolution of 35.9 nm/°. When the pump light energy was 17.81 mJ, the energy of the 1512 nm near-infrared laser was 3.210 mJ, with a slope efficiency of 31.2% and an optical-to-optical conversion efficiency (pump to signal) of 18.0%. Subsequent pumping of the second harmonic generation crystal KTiOPO4 (KTP) with the 1512 nm laser output from the BGSe optical parametric oscillator (OPO) facilitated the generation of 756 nm red light laser output. Angle tuning of the BGSe OPO eventually enabled the tunable output of the red edge spectral laser ranging from 701 nm to 780 nm with output energy of approximately 2 mJ, which is several orders of magnitude higher than traditional supercontinuum laser source solution. Such improvement becomes a solid cornerstone for long-range HSL applications.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"40695-40705"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688344","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

High-peak-power narrow-pulsed linearly polarized laser at ∼3 µm. 3 µm 处的高峰值功率窄脉冲线性偏振激光器。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.542304

Xiaoyue Feng, Yanyan Xue, Jingjing Liu, Luyang Tong, Qianqian Hao, Xiaodong Xu, Jie Liu, Jun Xu

引用次数: 0

Cycle-to-cycle analysis for high-repeatability optical-heterodyne interferometry. 高重复性光学外差干涉测量的周期分析。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.537148

Naoaki Kato, Yu Takiguchi, Kazuhiro Nakamura, Hiroshi Tanaka

引用次数: 0

Accurate loss measurement of optical bulk materials with the pulsed cavity ring-down technique. 利用脉冲腔环降技术精确测量光学块体材料的损耗。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-11-04 DOI: 10.1364/OE.537747

Binghua Cai, Bincheng Li, Yaowei Wei, Yanling Han, Tianmin Wang, Jing Wang, Hao Cui

{"title":"Accurate loss measurement of optical bulk materials with the pulsed cavity ring-down technique.","authors":"Binghua Cai, Bincheng Li, Yaowei Wei, Yanling Han, Tianmin Wang, Jing Wang, Hao Cui","doi":"10.1364/OE.537747","DOIUrl":"https://doi.org/10.1364/OE.537747","url":null,"abstract":"In a wide range of laser applications, the optical losses of optical materials used in the laser systems are closely linked to the laser-induced damage and laser beam quality deterioration. It is demonstrated in this paper that when the pulsed cavity ring-down (CRD) technique is employed to measure the optical loss of uncoated substrates inserted in the ring-down cavity with normal incidence, the surface reflection of the uncoated substrate causes a significant overestimation of the optical loss. The degree of overestimation increases rapidly with the increasing surface reflectance. By taking into consideration the influence of the surface reflection on the measured CRD signal and developing an approximately linear dependence of the measured loss on the actual loss, the actual loss of the solid substrate is determined accurately from the measured loss. A theoretical description is developed to establish a simple relationship between the CRD measured loss and the actual loss, so to eliminate the influence of the surface reflection on the optical loss measurement. Experimentally the optical losses of fused silica and KDP substrates with 10 mm thickness at 355 nm are determined to be 116 parts per million (ppm) and 567 ppm, respectively. The results demonstrate the usefulness of pulsed CRD for accurate determination of optical loss below the measurement limit (∼3000 ppm) of spectrophotometry.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"40375-40385"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142688349","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