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Spin characterization of high-stability optically levitated particles in dual-beam traps. 双束阱中高稳定光学悬浮粒子的自旋特性。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.570423
Zhou Sha, Aiqian Zhong, Zeng Kai, Yulie Wu, Dingbang Xiao, Xuezhong Wu
{"title":"Spin characterization of high-stability optically levitated particles in dual-beam traps.","authors":"Zhou Sha, Aiqian Zhong, Zeng Kai, Yulie Wu, Dingbang Xiao, Xuezhong Wu","doi":"10.1364/OL.570423","DOIUrl":"https://doi.org/10.1364/OL.570423","url":null,"abstract":"<p><p>Optically levitated spinning particles demonstrate significant promise for inertial sensing, precision measurement, and quantum science. However, the levitation and rotation of micro-vaterite particles primarily rely on a single trapping laser beam, severely limiting both stability and rotational capability. Although dual-beam configurations can improve trapping stiffness, they have not yet achieved stable high-rate spinning of vaterite particles. In this work, two counter-propagating beams with opposite circular polarization have been used to levitate and drive 3.58-μm-diameter vaterite particles to high spin rates. Compared to single-beam traps, our approach achieves a two-order-of-magnitude improvement in translational oscillation frequency and spin rate under atmospheric conditions. It achieved 6-MHz rotation at a moderate pressure of 20 Pa without enhancing thermal motion at low pressures. Meanwhile, the orientation of the particle under varying pressure conditions was characterized, revealing a fivefold improvement in orientational stability. This work provides a stable platform for high-rate spinning of particles, with significant potential applications in sensing and physical research.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6069-6072"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207175","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
Carbon nanotube emission enhancement in a silicon photonic crystal nanobeam cavity. 硅光子晶体纳米束腔中碳纳米管发射增强。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.572775
Zijun Xiao, Jianhao Zhang, Jean-René Coudevylle, Carlos Alonso-Ramos, Daniele Melati, Delphine Marris-Morini, Eric Cassan, Arianna Filoramo, Nicolas Dubreuil, Laurent Vivien
{"title":"Carbon nanotube emission enhancement in a silicon photonic crystal nanobeam cavity.","authors":"Zijun Xiao, Jianhao Zhang, Jean-René Coudevylle, Carlos Alonso-Ramos, Daniele Melati, Delphine Marris-Morini, Eric Cassan, Arianna Filoramo, Nicolas Dubreuil, Laurent Vivien","doi":"10.1364/OL.572775","DOIUrl":"https://doi.org/10.1364/OL.572775","url":null,"abstract":"<p><p>In this work, we demonstrate a substantial enhancement in photoluminescence from semiconducting single-walled carbon nanotubes through integration with a small-mode-volume silicon photonic crystal nanobeam cavity. Our design approach enables precise control of the cavity resonance over a wavelength range exceeding 30 nm, effectively covering the emission spectrum of semiconducting single-walled carbon nanotubes while maintaining stable optical performance. The fabricated nanobeam cavities, embedded with polymer-sorted semiconducting single-walled carbon nanotubes, exhibit low modal volumes of V = 0.07(<i>λ</i>/<i>n</i>)<sup>3</sup>, facilitating strong light-matter interaction characterized by high coupling efficiency and a Purcell factor on the order of 10000(<i>λ</i>/<i>n</i>)<sup>3</sup> at a wavelength of 1570 nm. This hybrid integration exploits the robust light-matter interaction properties of the cavity, leading to a pronounced increase in emission intensity from the carbon nanotubes.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6089-6092"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207197","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
All-PM fiber 1.0-μm 127-fs pulse dispersive wave generation from a 1.5-μm GHz fundamental-repetition-rate femtosecond fiber laser. 1.5 μm GHz基本重复速率飞秒光纤激光器产生1.0 μm - 127-fs脉冲色散波。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.573198
Zihan Li, Yuke Sheng, Wei Lin, Zhaoheng Liang, Xuewen Chen, Yalong Liu, Fei Yang, Xiaoming Wei, Zhongmin Yang
{"title":"All-PM fiber 1.0-μm 127-fs pulse dispersive wave generation from a 1.5-μm GHz fundamental-repetition-rate femtosecond fiber laser.","authors":"Zihan Li, Yuke Sheng, Wei Lin, Zhaoheng Liang, Xuewen Chen, Yalong Liu, Fei Yang, Xiaoming Wei, Zhongmin Yang","doi":"10.1364/OL.573198","DOIUrl":"https://doi.org/10.1364/OL.573198","url":null,"abstract":"<p><p>We report the generation of a 1.0- and 1.5-µm GHz fundamental-repetition-rate femtosecond fiber (GHz-FFF) laser system in an all-polarization-maintaining (PM) fiber laser configuration. The coherence of the nonlinear conversion from the 1.5-µm wavelength is guaranteed by the sub-100-fs incident pulse duration and optimization of the length of the PM highly nonlinear fiber (i.e., only 16 cm long). This coherent property of the GHz-FFF pulses is experimentally quantified by single-shot spectroscopy. The all-PM GHz-FFF laser system with good long-term stability offers outstanding performance metrics at 1.0 µm, i.e., 25.5-nm bandwidth and 127-fs pulsewidth. This novel design presents an excellent alternative for offset-free optical frequency comb generation, sub-cycle pulse generation, label-free microscopy, etc.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6093-6096"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207133","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
Parallelized projective measurements for spatial photonic qudits estimation. 空间光子量纲估计的平行射影测量。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.570564
Quimey Pears Stefano, Lorena Rebón, Claudio Iemmi
{"title":"Parallelized projective measurements for spatial photonic qudits estimation.","authors":"Quimey Pears Stefano, Lorena Rebón, Claudio Iemmi","doi":"10.1364/OL.570564","DOIUrl":"https://doi.org/10.1364/OL.570564","url":null,"abstract":"<p><p>We present a quantum state tomography method that enables the reconstruction of <i>arbitrary</i><i>d</i>-dimensional quantum states encoded in the discretized transverse momentum of photons, by using <i>only</i><i>d</i>+1 experimental settings. To this end, we identify a family of bases with the property that the outcomes of a projective measurement are <i>spatially multiplexed</i> on the interference pattern of the projected state. Using the proposed scheme, we performed, as a proof-of-principle, an experimental reconstruction of <i>d</i>=6-dimensional states, for which a complete set of mutually unbiased bases does not exist. We obtained fidelity values above 0.97 for both pure and mixed states, reducing the number of experimental settings from 42 to only 7.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6073-6076"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207057","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
PyRFTL: an open source Python tool for custom tube lens generation from off-the-shelf optics. PyRFTL：一个开源的Python工具，用于从现成的光学元件中生成自定义管透镜。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.571058
Q Bécar, P Montgomery, A Nahas, V Maioli
{"title":"PyRFTL: an open source Python tool for custom tube lens generation from off-the-shelf optics.","authors":"Q Bécar, P Montgomery, A Nahas, V Maioli","doi":"10.1364/OL.571058","DOIUrl":"https://doi.org/10.1364/OL.571058","url":null,"abstract":"<p><p>Optical design from stock optics can greatly reduce time and cost compared to custom components. The development of remote refocusing and oblique plane microscopy creates a need to build custom microscope tube lenses with specific focal lengths that are not commercially available. Previous methods required proprietary software licenses to take optical aberrations into account. In order to allow a wider community to quickly design custom tube lenses, an open-source, Python-based software for tube lens design is presented in this Letter. It creates tube lenses from the combination of two commercial lenses and then selects the best ones given their optical performances.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5993-5996"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207165","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
Compact polarization-independent non-volatile optical switches. 紧凑型偏振无关非易失性光开关。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.572643
Fangfa Bao, Jiakai Ruan, Weijia Li, Wei Zhang, Guoxiang Wang, Xiang Shen, Yixiao Gao
{"title":"Compact polarization-independent non-volatile optical switches.","authors":"Fangfa Bao, Jiakai Ruan, Weijia Li, Wei Zhang, Guoxiang Wang, Xiang Shen, Yixiao Gao","doi":"10.1364/OL.572643","DOIUrl":"https://doi.org/10.1364/OL.572643","url":null,"abstract":"<p><p>Compact, non-volatile optical switches on silicon platforms are essential for reconfigurable photonics, but the strong anisotropy of silicon waveguides leads to polarization-dependent performance. In this paper, we propose a polarization-independent, non-volatile optical switch utilizing low-loss phase change material (PCM) Sb<sub>2</sub>S<sub>3</sub>. By incorporating Sb<sub>2</sub>S<sub>3</sub> into a multimode slot waveguide, multimode interference can be efficiently tuned for both TE and TM polarizations, owing to enhanced light-PCM interaction. Polarization-independent switching is achieved through the optimal design of the multimode slot waveguide region. The proposed non-volatile switch demonstrates a crosstalk (CT) < -21.9 dB and insertion loss (IL) < 0.12 dB at 1550 nm with a multimode section length of 9.67 µm, which may find promising applications in reconfigurable photonic circuits for on-chip optical signal processing.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6048-6051"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207187","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
Ultra-thin UV-visible all-dielectric broadband metasurface absorber with resonant coupling of cavity effect. 具有腔效应谐振耦合的超薄紫外可见全介电宽带超表面吸收器。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.571680
Fuming Yang, Xiaoyan Shi, Zhe Wu, Siyu Guo, Xintong Wei, Jihui Jiang, Jizheng Geng, Shijia Zhu, Haiyang Xu, Zhongzhu Liang
{"title":"Ultra-thin UV-visible all-dielectric broadband metasurface absorber with resonant coupling of cavity effect.","authors":"Fuming Yang, Xiaoyan Shi, Zhe Wu, Siyu Guo, Xintong Wei, Jihui Jiang, Jizheng Geng, Shijia Zhu, Haiyang Xu, Zhongzhu Liang","doi":"10.1364/OL.571680","DOIUrl":"https://doi.org/10.1364/OL.571680","url":null,"abstract":"<p><p>All-dielectric metasurface perfect absorbers (DMPAs) have shown tremendous potential in applications such as optoelectronic detection and solar energy harvesting. However, the realization of broadband absorption in DMPAs remains challenging due to the harsh coupling conditions of the resonance absorption enhancement effect. Here, we proposed an ultra-thin, broadband DMPA. Our design leverages the broadband anti-reflection capability enabled by the cavity effect of the Ge-SiO<sub>2</sub>-Ge structure coupled with a top Ge metasurface resonant layer, which enables highly efficient absorption across the ultraviolet (UV) to visible region (330-700 nm), with an average absorptivity of 97.3%. Additionally, the absorber's ultra-thin overall thickness of 175 nm (0.35 λ) and its absorption spectrum being independent of the metasurface geometry demonstrates excellent fabrication tolerance. This study provides valuable insights into the design of ultra-thin, broadband all-dielectric absorbers and their potential applications in detectors and beyond.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6028-6031"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207200","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 and high-speed silicon Mach-Zehnder modulator at 2 μm wavelengths. 2 μm波长的高效高速硅Mach-Zehnder调制器。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.568137
Jianing Wang, Jianwei Tang, Xuelin Zhang, Yihang Li, Xi Wang, Jian Li, Qinghai Song, Yanfu Yang, Jiangbing Du, Jinlong Wei, Ke Xu
{"title":"Efficient and high-speed silicon Mach-Zehnder modulator at 2 μm wavelengths.","authors":"Jianing Wang, Jianwei Tang, Xuelin Zhang, Yihang Li, Xi Wang, Jian Li, Qinghai Song, Yanfu Yang, Jiangbing Du, Jinlong Wei, Ke Xu","doi":"10.1364/OL.568137","DOIUrl":"https://doi.org/10.1364/OL.568137","url":null,"abstract":"<p><p>Growing research interests have been directed towards the 2-μm waveband, which is considered to be another promising window for fiber and free-space optical communications. However, the signaling beyond 100 Gbit/s was difficult at this waveband due to the limited bandwidth of the available electro-optic modulators. In this study, we demonstrated a 35-GHz silicon photonic Mach-Zehnder Modulator (MZM) fabricated by a standard multi-project wafer process. Up to 100 Gb/s on-chip modulation was experimentally achieved at the wavelength of 1976 nm, which was eventually limited by the bandwidth of the receiver. The modulation efficiency is measured to be 0.82 V·cm. This is a benchmark modulation speed among existing silicon modulators around a 2 µm spectral range.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5989-5992"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207231","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
Enhanced terahertz wave generation by an antenna-coupled 4 × 1 UTC-PD array and a T-junction combiner. 天线耦合4 × 1 UTC-PD阵列和t结组合器增强太赫兹波产生。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.568757
Hussein Ssali, Yoshiki Kamiura, Yuanhao Li, Bo Li, Ming Che, Kazutoshi Kato
{"title":"Enhanced terahertz wave generation by an antenna-coupled 4 × 1 UTC-PD array and a T-junction combiner.","authors":"Hussein Ssali, Yoshiki Kamiura, Yuanhao Li, Bo Li, Ming Che, Kazutoshi Kato","doi":"10.1364/OL.568757","DOIUrl":"https://doi.org/10.1364/OL.568757","url":null,"abstract":"<p><p>The terahertz (THz) band holds transformative potential for next-generation communication and sensing systems, yet practical deployment remains hindered by limited output power from available electronic and photonic THz sources. In this work, we demonstrate an on-chip optoelectronic THz wave power enhancement approach by monolithically integrating a microstrip patch antenna and a 4 × 1 T-junction combiner with arrayed InGaAs/InP uni-traveling carrier photodiodes (UTC-PDs) on a silicon carbide (SiC) substrate. Relative to a single UTC-PD device, experimental results show a 10.9 dB increase in detected power at 300 GHz when combining photocurrents from four UTC-PDs biased at -1 V, closely aligning with theoretical predictions of scaling characteristics of current-driven sources. This work also establishes that SiC has the potential to be a robust platform for high-power THz systems.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6057-6060"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207239","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
Moiré vector flat bands and the generation of wide-angle superchiral fields. 矢量平带与广角超手性场的产生。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.568672
Huizhen Zhang, Haoyu Qin, Weixuan Zhang, Xiangdong Zhang
{"title":"Moiré vector flat bands and the generation of wide-angle superchiral fields.","authors":"Huizhen Zhang, Haoyu Qin, Weixuan Zhang, Xiangdong Zhang","doi":"10.1364/OL.568672","DOIUrl":"https://doi.org/10.1364/OL.568672","url":null,"abstract":"<p><p>We propose a novel, to the best of our knowledge, approach for engineering vector flat bands-degenerate dispersionless bands supporting dual-polarization electromagnetic modes-through precision structural design of moiré photonic crystals. This platform enables the generation of highly uniform superchiral fields under wide-angle illumination, achieving field enhancements exceeding 100-fold compared to conventional circularly polarized light across a broad angular spectrum. This broadband angular tolerance eliminates the strict alignment requirements in chiral molecular detection systems, which may possess important applications in the field of ultrasensitive detection of molecular chirality.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6004-6007"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207286","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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