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Spatiotemporal optical wave packets with arbitrary trajectories. 具有任意轨迹的时空光波包。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.562151
Cen Wang, Zehong Liang, Zhang Ruan, Meixia Ma, Dongmei Deng
{"title":"Spatiotemporal optical wave packets with arbitrary trajectories.","authors":"Cen Wang, Zehong Liang, Zhang Ruan, Meixia Ma, Dongmei Deng","doi":"10.1364/OL.562151","DOIUrl":"https://doi.org/10.1364/OL.562151","url":null,"abstract":"<p><p>Spatiotemporal optical wave packets (STWPs) that are realized by spatiotemporal frequency coupling have the capacity to continuously control longitudinal group velocities from negative to superluminal. In this work, an inverse design algorithm based on the theory of stationary phase approximation is proposed to realize the design of arbitrarily variable trajectories for STWPs under non-paraxial conditions in free space. The central energy of the wave packet maintains almost constant intensity over long propagation distances, while the algorithm remains compatible with STWPs in complex dispersive systems.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4114-4117"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289578","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
Brillouin scattering in hollow-core fibers filled with mixed gas. 混合气体填充空心芯纤维中的布里渊散射。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.559173
Xiaohui Huang, Anting Wang, Yun Qi, Fan Yang
{"title":"Brillouin scattering in hollow-core fibers filled with mixed gas.","authors":"Xiaohui Huang, Anting Wang, Yun Qi, Fan Yang","doi":"10.1364/OL.559173","DOIUrl":"https://doi.org/10.1364/OL.559173","url":null,"abstract":"<p><p>Brillouin scattering in gas-filled hollow-core fibers (HCFs) is significantly enhanced by the strong light-gas interaction and the tunability of gas properties by the hollow-core structure. However, the behavior of Brillouin scattering in HCFs filled with mixed gas remains unexplored. In this work, we present the first, to the best of our knowledge, investigation of backward Brillouin scattering in HCF waveguides filled with mixed gas. We examine its dependence on pressure, temperature, and gas composition, developing a theoretical model that aligns well with experimental results. Furthermore, we demonstrate that the Brillouin spectrum can be tuned via gas concentration and pressure, offering new possibilities for controlling Brillouin interactions in gas-filled waveguides.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3875-3878"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289498","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
CGMRF: CLIP-guide multimodal registration and fusion for a visible-infrared dual-modality imaging system. CGMRF: CLIP-guide多模态配准与融合的可见-红外双模成像系统。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.558572
Wenqu Zhao, Lingxue Wang, Lian Zhang, Dezhi Zheng, Yi Cai
{"title":"CGMRF: CLIP-guide multimodal registration and fusion for a visible-infrared dual-modality imaging system.","authors":"Wenqu Zhao, Lingxue Wang, Lian Zhang, Dezhi Zheng, Yi Cai","doi":"10.1364/OL.558572","DOIUrl":"https://doi.org/10.1364/OL.558572","url":null,"abstract":"<p><p>In this Letter, we propose CLIP-guided multimodal registration and fusion (CGMRF), a semantic understanding-based multimodal image fusion system, for visible and infrared (IR) dual-modality imaging. CGMRF leverages semantic similarity, better aligned with human visual interpretation, to address the challenges of multimodal image registration and fusion. Experimental results across multiple metrics demonstrate the advantages of the proposed CGMRF system.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3907-3910"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289501","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
Dynamic wavelength switching and continuous tunability in a composite Tm/Ho:YLF laser. Tm/Ho:YLF复合激光器的动态波长开关和连续可调性。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.566577
Ke Wang, Kuan Li, Kangyang Ni, Chunting Wu, Yongji Yu
{"title":"Dynamic wavelength switching and continuous tunability in a composite Tm/Ho:YLF laser.","authors":"Ke Wang, Kuan Li, Kangyang Ni, Chunting Wu, Yongji Yu","doi":"10.1364/OL.566577","DOIUrl":"https://doi.org/10.1364/OL.566577","url":null,"abstract":"<p><p>We present a wavelength-conversion laser system using Tm/Ho:YLF composite crystals, based on a switchable output coupling system and F-P etalons for the first time, to our knowledge. The system enables flexible switching between Tm and Ho lasers and independently achieves tunable for both lasers. At 20.74 W pump power, the Tm laser at 1903.68 nm and the Ho laser at 2064.60 nm were achieved with maximum powers of 2.99 and 2.61 W. At 14.19 W pump power, continuous tuning of Tm (1875.60-1885.31 nm, 1902.75-1904.75 nm) and Ho (2050.75-2064.60 nm) lasers was achieved by adjusting the F-P etalons. This wavelength-conversion system can flexibly meet diverse requirements for laser types and wavelengths in different application scenarios, demonstrating broad application prospects.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4134-4137"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289513","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
Efficient room temperature continuous wave laser operation of Tm:YLF around 820 nm. Tm:YLF在820 nm左右的高效室温连续波激光操作。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563752
M Badtke, H Tanaka, S Püschel, C Kränkel, S Kalusniak
{"title":"Efficient room temperature continuous wave laser operation of Tm:YLF around 820 nm.","authors":"M Badtke, H Tanaka, S Püschel, C Kränkel, S Kalusniak","doi":"10.1364/OL.563752","DOIUrl":"https://doi.org/10.1364/OL.563752","url":null,"abstract":"<p><p>We report on room-temperature continuous wave laser operation on the <sup>3</sup>H<sub>4</sub>→<sup>3</sup>H<sub>6</sub> transition in Tm<sup>3+</sup>(1 at.%):LiYF<sub>4</sub> (YLF). Under Ti:sapphire pumping at 781 nm, we achieved a maximum output power of 865 mW at a wavelength of 820 nm with a slope efficiency of 54%. Laser operation was demonstrated at 813, 815, 822, and 834 nm. Our spectroscopic analysis reveals spectrally broad and smooth gain spectra beneficial for wavelength tuning and short pulse generation but shows that a significant fraction of the population is trapped in the metastable <sup>3</sup>F<sub>4</sub> level.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3994-3997"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289514","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
Experimental revival of squeezing-enhanced phase measurement in noisy quantum channels. 噪声量子信道中压缩增强相位测量的实验恢复。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.560113
Jie Tang, JiaWei Wang, ZhenYu Guo, Ying Liu, Pei Zhang, Lei Shi
{"title":"Experimental revival of squeezing-enhanced phase measurement in noisy quantum channels.","authors":"Jie Tang, JiaWei Wang, ZhenYu Guo, Ying Liu, Pei Zhang, Lei Shi","doi":"10.1364/OL.560113","DOIUrl":"https://doi.org/10.1364/OL.560113","url":null,"abstract":"<p><p>Squeezing-enhanced optical phase estimation can significantly improve the measurement sensitivity and effectively enhance the signal-to-noise ratio. Investigating the influence of inevitable losses and noise in quantum channels on phase measurement is of paramount importance. Here, we analyze and experimentally demonstrate the evolution of squeezing enhancement in phase measurement, particularly under a non-Markovian decoherence model characterized by a correlated Gaussian noise in a bosonic environment. We show that in a noise-added channel, where the benefits of squeezing-enhanced phase measurement are seemingly lost, the performance can be restored through the strategic introduction of classical correlated noise. This is the first, to the best of our knowledge, experimental evidence, showing that environmental memory effects can substantially enhance phase measurement performance in a squeezing-enhanced optical interferometer under the correlated Gaussian noise, providing valuable insights for practical quantum sensing in noisy environments.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3879-3882"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289519","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
Fabricating mixed-halide perovskite nanowire photodetectors for polarized light detection and encrypted optical communication via nanoimprinting and anion exchange. 利用纳米印迹和阴离子交换技术制备混合卤化物钙钛矿纳米线光电探测器，用于偏振光探测和加密光通信。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563102
Meng-Meng Li, Zhuang-Zhuang Zhou, Hao Liu, Ning Wei, Chao Lv, Hong Xia
{"title":"Fabricating mixed-halide perovskite nanowire photodetectors for polarized light detection and encrypted optical communication via nanoimprinting and anion exchange.","authors":"Meng-Meng Li, Zhuang-Zhuang Zhou, Hao Liu, Ning Wei, Chao Lv, Hong Xia","doi":"10.1364/OL.563102","DOIUrl":"https://doi.org/10.1364/OL.563102","url":null,"abstract":"<p><p>Mixed-halide perovskite nanowires have broad applications in optoelectronics due to their excellent charge transport properties and high mobility. However, traditional preparation methods face challenges in achieving compositional uniformity and structural stability. In this study, we employ a two-step method combining nanoimprinting and liquid-phase anion exchange to fabricate mixed-halide nanowires. The photodetector based on CsCu<sub>2</sub>I<sub>x</sub>Cl<sub>(3-x)</sub> nanowires (NWs) exhibits a responsivity of 36.8 mA/W, a high polarization sensitivity of I<sub>max</sub>/I<sub>min</sub> = 1.53, and excellent mechanical stability. Finally, encrypted optical communication is realized by integrating encryption algorithms with a dual-beam irradiation mode. This work demonstrates the successful fabrication of mixed-halide nanowires via the two-step method and explores their potential for other optoelectronic applications.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3982-3985"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289521","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
Giant 64 m2 passive green laser gyroscope: solution in Earth rotation sensing and geophysical detection. 巨型64m2无源绿色激光陀螺仪：地球自转传感和地球物理探测的解决方案。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.560688
Yuxuan Chen, Yuhong Zhong, Kui Liu, Yawen Liu, Yangsheng Cai, Zhanhao Liu, Lei Zheng, Zhiyuan Wang, Karl Ulrich Schreiber, Zehuang Lu, Jie Zhang, Liangcheng Tu, Jun Luo
{"title":"Giant 64 m<sup>2</sup> passive green laser gyroscope: solution in Earth rotation sensing and geophysical detection.","authors":"Yuxuan Chen, Yuhong Zhong, Kui Liu, Yawen Liu, Yangsheng Cai, Zhanhao Liu, Lei Zheng, Zhiyuan Wang, Karl Ulrich Schreiber, Zehuang Lu, Jie Zhang, Liangcheng Tu, Jun Luo","doi":"10.1364/OL.560688","DOIUrl":"https://doi.org/10.1364/OL.560688","url":null,"abstract":"<p><p>Large-scale laser gyroscopes with high resolution are widely used in Earth rotation sensing and geophysical detection. We demonstrate a giant 64 m<sup>2</sup> green laser gyroscope in a passive running mode. By adopting a heterolithic architecture and using a 532 nm solid state laser as the light source, the gyroscope demonstrates a short wavelength, a large-scale factor, and currently the highest <i>Q</i>-factor of 6 × 10<sup>12</sup> among existing gyroscopes. A minimum sensitivity of 7×10<sup>-11</sup><i>r</i><i>a</i><i>d</i>/<i>s</i>/<i>H</i><i>z</i> is achieved, which is the best performance among passive ring gyroscopes (PRGs) to the best of our knowledge. This high sensitivity allows detection of terrestrial secondary microseismic signal at about 0.25 Hz, demonstrating the application value of large-scale PRGs in the field of geophysics. With a theoretical shot-noise limit of 1×10<sup>-12</sup><i>r</i><i>a</i><i>d</i>/<i>s</i>/<i>H</i><i>z</i>, the PRG offers a promising solution for future detection of Earth rotation with extreme sensitivity.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3883-3886"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289526","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 400 Gbps quantum noise stream cipher encryption for 1520 km fiber transmission using end-to-end deep learning. 利用端到端深度学习实现1520公里光纤传输的400gbps量子噪声流密码加密。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.553692
Yunhao Xie, Xianran Huang, Guozhi Xu, Junzhe Xiao, Mengyue Shi, Weisheng Hu, Lilin Yi
{"title":"Implementation of 400 Gbps quantum noise stream cipher encryption for 1520 km fiber transmission using end-to-end deep learning.","authors":"Yunhao Xie, Xianran Huang, Guozhi Xu, Junzhe Xiao, Mengyue Shi, Weisheng Hu, Lilin Yi","doi":"10.1364/OL.553692","DOIUrl":"https://doi.org/10.1364/OL.553692","url":null,"abstract":"<p><p>In the era of large models and big data, the security of optical fiber communication backbone networks has garnered significant attention. Quantum noise stream cipher (QNSC) stands as a crucial method for safeguarding the physical layer security of optical fiber communications, yet the current schemes lag behind the rate capabilities of existing 400G optical fiber backbone networks. In this paper, we introduce deep learning into QNSC and propose an end-to-end quantum noise stream cipher (E2E-QNSC) scheme, which encrypts 16 quadrature amplitude modulation (QAM) into E2E-65536QAM/QNSC. Our experiments successfully demonstrate secure optical communication with a single-channel rate of 400 Gbps, a total capacity of 8.4 Tbps, and a transmission distance of 1520 km. Even in the most extreme scenarios, the detection failure probability (DFP) of the scheme remains at an excellent level greater than 0.9999, proving the security of the approach. The experimental results presented herein represent the highest rate-distance product record of QNSC secure transmission systems, to the best of our knowledge.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3808-3811"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289552","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
InP optical phased array for high-speed wavefront shaping through scattering media. 利用散射介质进行高速波前整形的InP光相控阵。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563500
Zhiyu Chen, Marco Gagino, Yuchen Song, Victor Dolores-Calzadilla, Eduward Tangdiongga, Oded Raz
{"title":"InP optical phased array for high-speed wavefront shaping through scattering media.","authors":"Zhiyu Chen, Marco Gagino, Yuchen Song, Victor Dolores-Calzadilla, Eduward Tangdiongga, Oded Raz","doi":"10.1364/OL.563500","DOIUrl":"https://doi.org/10.1364/OL.563500","url":null,"abstract":"<p><p>By spatially modulating the wavefront, light can be controlled to focus through scattering media, enabling applications in biological sensing, non-line-of-sight (NLOS) imaging, and optical wireless communication. However, conventional liquid crystal-based spatial light modulators (LC-SLMs) and digital micromirror devices (DMDs) operate at refresh rates of at most tens of kilohertz, limiting their practicality for real-time manipulation of a large number of controlled channels. Here, we demonstrate wavefront shaping (WFS) through scattering media using an InP optical phased array (OPA). The wavefront phase is modulated via on-chip electro-optic modulation, achieving a modulation bandwidth of 12 MHz, the fastest reported value in literature, two orders of magnitude higher than the state of the art. Furthermore, with the usage of integrated amplifiers, the output power is up to 15.4 dBm with a net on-chip gain of 10.3 dB, which can supply high power for NLOS imaging and communication. These advantages highlight the potential of InP OPAs for high-speed wavefront shaping applications.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4122-4125"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289553","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
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