Optics letters最新文献

Embedding matrices in programmable photonic networks with flexible depth and width.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.553436

Matthew Markowitz, Kevin Zelaya, Mohammad-Ali Miri

引用次数: 0

Heavy metal-free white light-emitting diodes based on multinary copper chalcogenide nanocrystals.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.555369

Peiwen Lv, Kai Wang, Danxin Hou, Shengli Wu, Jintao Guan, Zhe Yin, Aiwei Tang

引用次数: 0

High-security optical encryption based on single-pixel imaging and structured light multiplexing holography.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.557688

Sheng Wang, Zhenyu Zhang, Shangyin Zhou, Bijun Xu, Xiaogang Wang

{"title":"High-security optical encryption based on single-pixel imaging and structured light multiplexing holography.","authors":"Sheng Wang, Zhenyu Zhang, Shangyin Zhou, Bijun Xu, Xiaogang Wang","doi":"10.1364/OL.557688","DOIUrl":"https://doi.org/10.1364/OL.557688","url":null,"abstract":"The applications of single-pixel imaging (SPI) and optical multiplexing techniques in optical encryption are gradually increasing. However, little attention has been given to integrating these two for applications. Here, we propose a dual-layer optical encryption scheme that combines sample region-dependent SPI and structured light multiplexing holography. In the encryption process, the bucket signal obtained by SPI and the position coordinates used to generate the structured illumination patterns for SPI will be encrypted into a holographic ciphertext through spatial-structured light multiplexing holography. During decryption, the bucket signal can be retrieved from the ciphertext using a binary matrix key, and the sampling region can be determined by illuminating the ciphertext with multi-ramp helical-conical beams. Thus, the original secret image can be successfully decrypted. This work takes advantage of the spatial mode multiplexing characteristics of the structured beams and the dependence of Fourier SPI encryption on the sampling region, thereby promoting the collaborative application of the two in the field of optical security.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 7","pages":"2378-2381"},"PeriodicalIF":3.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143753860","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

Isotropic spectrum optimization for enhancing image fidelity in super-resolution structured illumination microscopy.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.558342

Yong Hu, Ge Wu, Zhi Chen, Tao Yang, Liao Liang, Ziqiang Tu, Xiaolu Ni, Rong Wan, Qiuqiang Zhan, Zewei Luo, Tongsheng Chen

{"title":"Isotropic spectrum optimization for enhancing image fidelity in super-resolution structured illumination microscopy.","authors":"Yong Hu, Ge Wu, Zhi Chen, Tao Yang, Liao Liang, Ziqiang Tu, Xiaolu Ni, Rong Wan, Qiuqiang Zhan, Zewei Luo, Tongsheng Chen","doi":"10.1364/OL.558342","DOIUrl":"https://doi.org/10.1364/OL.558342","url":null,"abstract":"Super-resolution structured illumination microscopy (SR-SIM) performs spectral expansion of high-frequency information encoded in stripe patterns. However, using a limited number of pattern orientations (typically three) results in a petal-like frequency spectrum, leading to structural and intensity fidelity degradation in reconstructed images. In this Letter, we propose an integrated spatial-frequency domain SIM reconstruction method that enables isotropic spectrum expansion, called ISO-SIM. ISO-SIM overcomes structural artifacts caused by an anisotropic spectral expansion in traditional SIM imaging. We demonstrate the feasibility and fidelity of ISO-SIM through simulations, Argolight slide, and live-cell imaging. ISO-SIM enhanced structural similarity and reduced the error in the mean intensity ratio at certain spatial frequencies compared to Wiener-SIM. We further applied ISO-SIM to live-cell quantitative FRET imaging. ISO-SIM-FRET ensured that the measured FRET efficiency matched the ground truth, with a 19% reduction in the standard deviation compared to Wiener-SIM-FRET, maintaining intensity fidelity and enhancing the accuracy of quantitative analysis while suppressing artifacts.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 7","pages":"2461-2464"},"PeriodicalIF":3.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143753947","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

Layered ternary message passing decoder of LDPC codes for 50G-PON.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.557079

Ming Jiang, Qiushi Xu, Chunming Zhao

引用次数: 0

Megawatt peak-power, single-mode, mid-infrared femtosecond pulse delivery at 5-6 μm via a silica-based anti-resonant hollow core fiber.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.555306

Ang Deng, Linzhen He, Yuxi Wang, Trivikramarao Gavara, Liangliang Lu, Wonkeun Chang, Hongyu Luo, Jianfeng Li, Houkun Liang

{"title":"Megawatt peak-power, single-mode, mid-infrared femtosecond pulse delivery at 5-6 μm via a silica-based anti-resonant hollow core fiber.","authors":"Ang Deng, Linzhen He, Yuxi Wang, Trivikramarao Gavara, Liangliang Lu, Wonkeun Chang, Hongyu Luo, Jianfeng Li, Houkun Liang","doi":"10.1364/OL.555306","DOIUrl":"https://doi.org/10.1364/OL.555306","url":null,"abstract":"We demonstrate the first, to our knowledge, delivery of megawatt peak power, single-mode mid-infrared (MIR) femtosecond pulses at 5-6 μm using a silica-based anti-resonant hollow core fiber (AR-HCF). Benefiting from the light confinement inside the hollow core, the AR-HCF exhibits high damage thresholds, reliable power stability, efficient spatial beam self-cleaning, and pulse shape preservation. Pumped by a homemade LGS-based two-stage optical parametric amplifier generating high-power ∼200 fs pulses, the fiber achieves a maximum delivered peak power of 4 MW at 5.1 μm and 5 MW at 6.1 μm, with peak intensities reaching 100 GW/cm2, despite fiber losses exceeding 2 dB/m. This flexible, meter-scale delivery system demonstrates exceptional potential for addressing the challenges of high peak power MIR laser delivery in precise, minimally invasive interventional ablation, particularly at resonant peaks such as amide-I (6.1 μm) and cholesterol esters (5.75 μm).","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 7","pages":"2149-2152"},"PeriodicalIF":3.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143753960","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

Near-IR photoluminescence at the photon level in a silica fiber patch cable.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.549799

Alexander C B Greenwood, Abhay Verma, Jackson Russett, Andi Shahaj, Li Qian

引用次数: 0

On-chip broadband power splitters via non-Hermitian subspaces.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.559011

Xiaohong Li, Zhiqiang Qi, Hongyu Tan, Yang Liu, Lu Ding, Shaolin Ke

引用次数: 0

Diode-pumped few-optical-cycle laser based on an ytterbium-doped disordered strontium yttrium borate crystal.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.559850

Huang-Jun Zeng, Zhang-Lang Lin, Shijia Sun, Pavel Loiko, Haifeng Lin, Ge Zhang, Zhoubin Lin, Chengbo Mou, Xavier Mateos, Valentin Petrov, Weidong Chen

{"title":"Diode-pumped few-optical-cycle laser based on an ytterbium-doped disordered strontium yttrium borate crystal.","authors":"Huang-Jun Zeng, Zhang-Lang Lin, Shijia Sun, Pavel Loiko, Haifeng Lin, Ge Zhang, Zhoubin Lin, Chengbo Mou, Xavier Mateos, Valentin Petrov, Weidong Chen","doi":"10.1364/OL.559850","DOIUrl":"https://doi.org/10.1364/OL.559850","url":null,"abstract":"We report on a power-scalable, diode-pumped sub-20-fs mode-locked (ML) laser based on a multisite ytterbium-doped strontium yttrium borate crystal, Yb:Sr3Y2(BO3)4, exhibiting broadband spectral gain. Pumping with a low-power, spatially single-mode laser diode, the Yb:Sr3Y2(BO3)4 laser produces soliton pulses as short as 19 fs at 1073.1 nm via soft-aperture Kerr-lens mode locking. A record-high average output power of 131 mW for such pulse durations represents a sixfold increase compared to the previous work. Peak pulse powers as high as ∼140 kW were achieved, increasing the average output power to 328 mW at 1070.5 nm for a slightly longer pulse duration of 28 fs. This corresponds to an impressive laser efficiency of 30%. The results highlight the potential of diode-pumped ytterbium lasers operating in the few-optical-cycle regime for achieving simultaneously high average output power and laser efficiency.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 7","pages":"2203-2206"},"PeriodicalIF":3.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143754041","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

Active breathing pulses induced by the periodic loss in a passive mode-locked laser.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-04-01 DOI: 10.1364/OL.554512

Jialong Feng, Zhenzhu Zhang, Jiajun Wei, Yueqing Du, Chao Zeng, Dong Mao, Jianlin Zhao

{"title":"Active breathing pulses induced by the periodic loss in a passive mode-locked laser.","authors":"Jialong Feng, Zhenzhu Zhang, Jiajun Wei, Yueqing Du, Chao Zeng, Dong Mao, Jianlin Zhao","doi":"10.1364/OL.554512","DOIUrl":"https://doi.org/10.1364/OL.554512","url":null,"abstract":"The breather is an important emerging topic in nonlinear optics. In fiber lasers, the breather is generally achieved by tuning the loss of the laser system to search for the proper Hopf-bifurcation route. Here, we propose a simple and reliable method to generate breathing pulses, i.e., to introduce a controlled periodic transmittance, i.e., a periodic loss, within the laser that drives the mode-locked pulses to produce a synchronous periodic evolution. Therefore, we name this type of pulse as active breathing pulses. Experimental results show that the characteristic parameters of the active breathing pulses, e.g., the breathing ratio and breathing frequency, can be accurately controlled by the modulation depth and modulation frequency of the periodic transmittance introduced by the electro-optical modulator (EOM). Numerical simulations can reproduce the experimental phenomena. Our work not only gives a new, to the best of our knowledge, approach to modulate the characteristics of the breather but is also promising for the discovery of novel Hopf-bifurcation phenomena and soliton patterns in a periodically varying system.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 7","pages":"2326-2329"},"PeriodicalIF":3.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143753984","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