Optics Communications最新文献_第2页

Optical video encryption using iterative phase retrieval and multimodal chaotic maps 基于迭代相位恢复和多模态混沌映射的光学视频加密

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-24 DOI: 10.1016/j.optcom.2026.132960

Gaurav Verma , Wenqi He

The Optical Phase Retrieval (OPR) technique represents an innovative encoding approach that enforces constraints in both the Fourier and spatial domains to generate a phase-only representation of data. Discarding amplitude information inherently achieves data compression in the Fourier domain while preserving essential structural details. This paper presents an efficient and secure video encryption framework integrating OPR with multimodal chaotic-map modulation for enhanced robustness and confidentiality. In the proposed method, video sequences are decomposed into individual frames, which are encoded into phase-only distributions using an iterative OPR algorithm. These encoded frames are further encrypted through multimodal chaotic maps, including Logistic and Henon systems, ensuring high key sensitivity, strong diffusion, and nonlinear randomness. The integrated framework achieves efficient data compression, secure transmission, and robustness against perturbations. The numerical results demonstrate that the proposed scheme achieves a large key space and strong sensitivity, and offers efficient computation time complexity, also effectively showing reliable performance against video processing attacks such as compression, rotation, and blurring. Comprehensive experiments under diverse degradations — such as Gaussian noise, salt-and-pepper noise, and partial occlusion — demonstrate that the proposed system provides high-quality reconstruction during decryption. Statistical evaluations using metrics such as MSE, PSNR, SSIM, and entropy confirm excellent decryption fidelity and strong resistance to standard cryptographic attacks. Furthermore, the proposed system exhibits real-time processing capabilities, making it a suitable choice for next-generation optical video encryption and secure multimedia communication applications.

光学相位检索（OPR）技术代表了一种创新的编码方法，它在傅里叶和空间域中强制约束以生成数据的纯相位表示。在保留基本结构细节的同时，丢弃幅度信息固有地实现了傅里叶域的数据压缩。本文提出了一种将OPR与多模态混沌映射调制相结合的高效、安全的视频加密框架，增强了该框架的鲁棒性和保密性。在该方法中，视频序列被分解为单独的帧，并使用迭代OPR算法将其编码为纯相位分布。这些编码帧通过多模态混沌映射（包括Logistic和Henon系统）进一步加密，确保高密钥灵敏度、强扩散和非线性随机性。该集成框架实现了高效的数据压缩、安全的传输和抗扰动的鲁棒性。数值结果表明，该方案具有较大的密钥空间和较强的灵敏度，具有较好的计算时间复杂度，并能有效抵御压缩、旋转、模糊等视频处理攻击。在高斯噪声、椒盐噪声和部分遮挡等不同噪声下的综合实验表明，该系统在解密过程中提供了高质量的重建。使用MSE、PSNR、SSIM和熵等指标的统计评估证实了出色的解密保真度和对标准加密攻击的强大抵抗力。此外，所提出的系统具有实时处理能力，使其成为下一代光学视频加密和安全多媒体通信应用的合适选择。

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引用次数: 0

Neural-network quantum state tomography in four-photon entanglement systems 四光子纠缠系统中的神经网络量子态断层扫描

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-23 DOI: 10.1016/j.optcom.2026.132946

Xiaolei Kuang , Xijun Ren

This study conducts a comprehensive benchmarking analysis of neural-network-based quantum state tomography on a four-photon entangled system, systematically evaluating the performance of three variational architectures: the positive-real ansatz, the pure-state ansatz, and the purification ansatz. Our experimental findings illustrate the following: the positive-real ansatz attains a fidelity exceeding 99% for Z-basis measurements, though its performance is highly sensitive to the choice of measurement basis; the pure-state ansatz, which is based on a restricted Boltzmann machine, achieves a fidelity of over 99% while utilizing merely 31% of the conventional measurement bases, thereby demonstrating remarkable measurement efficiency; in contrast, the purification ansatz exhibits notable fragility during optimization and high sensitivity to noise. This work offers essential guidance for the selection of suitable neural-network architectures in quantum state tomography and their potential extension to large-scale quantum systems.

本研究在四光子纠缠系统上对基于神经网络的量子态层析成像进行了全面的基准分析，系统地评估了三种变分架构的性能：正实分析、纯态分析和纯化分析。我们的实验结果表明：正实方差对z基测量的保真度超过99%，但其性能对测量基的选择高度敏感；基于受限玻尔兹曼机的纯态ansatz，仅利用31%的常规测量基，保真度达到99%以上，显示出显著的测量效率；相比之下，净化层在优化过程中表现出明显的脆弱性和对噪声的高敏感性。这项工作为量子态断层扫描中选择合适的神经网络架构及其在大规模量子系统中的潜在扩展提供了重要的指导。

引用次数: 0

Selective multichannel excitation of Olver surface plasmon polaritons in composite nanoarray structures 复合纳米阵列结构中Olver表面等离子激元的选择性多通道激发

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-23 DOI: 10.1016/j.optcom.2026.132907

Xuefeng Shi , Peng Lang , Boyu Ji , Zhenlong Zhao , Yang Xu , Xiaowei Song , Jingquan Lin

Non-diffracting Olver surface plasmon polaritons (SPPs) exhibit unique characteristics of anti-disturbance and self-bending propagation, effectively reducing diffraction loss and extend the propagation distance of the main lobe. In this work, we design a polarization- and wavelength-sensitive composite nanoarray structure that enables flexible and active control of the excitation and bending direction of the Olver SPP main lobe in four distinct directions. Specifically, changing the polarization state of the incident light enables tuning the directional excitation of the Olver SPP main lobe, while varying the incident wavelength allows the precise control of its excitation direction along the upper or lower part of the structure. Quantitative analysis based on the extinction ratio demonstrates the excellent directional excitation capability of the proposed structure. Furthermore, the diffraction-free and self-healing properties of Olver SPPs are verified through the extraction of amplitude distribution curves along their propagation trajectories with the introduction of obstacles. These findings provide a promising strategy for advancing applications in optical tweezers, information routing, and plasmonic functional devices.

无衍射Olver表面等离子激元（SPPs）具有独特的抗干扰和自弯曲传播特性，有效地降低了衍射损耗，延长了主瓣的传播距离。在这项工作中，我们设计了一种极化和波长敏感的复合纳米阵列结构，可以灵活主动地控制Olver SPP主瓣在四个不同方向上的激发和弯曲方向。具体来说，改变入射光的偏振状态可以调整Olver SPP主瓣的定向激发，而改变入射波长可以精确控制其沿结构上部或下部的激发方向。基于消光比的定量分析表明，该结构具有良好的定向激励能力。此外，通过提取在引入障碍物时沿其传播轨迹的振幅分布曲线，验证了Olver SPPs的无衍射和自愈特性。这些发现为推进光镊、信息路由和等离子体功能器件的应用提供了一个有前途的策略。

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引用次数: 0

A networking protocol for UV communication networks based on adaptive message compression 一种基于自适应消息压缩的UV通信网络组网协议

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-23 DOI: 10.1016/j.optcom.2026.132939

Leitao Wang, Zhiyong Xu, Jianhua Li, Jingyuan Wang, Cheng Li, Jiyong Zhao, Yang Su

Existing networking protocols for ultraviolet communication networks suffer from insufficient reliability, along with shortcomings in ensuring message transmission continuity and controlling failure rates. This paper proposes the enhanced ultraviolet large-scale communication networking (eUVLSCN) protocol. Firstly, a message-based simulation model is established, and network performance evaluation criteria centered on message transmission rate and message transmission success rate are put forward. Secondly, the frame structure is optimized, and message fields are added to ensure continuous message transmission. Meanwhile, an adaptive message compression algorithm is designed to dynamically adjust the compression ratio based on the message size and the transmission distance between source and destination nodes. Simulation results show that compared with the existing networking protocols for large-scale mobile ultraviolet communication networks, the eUVLSCN protocol achieves a higher message transmission success rate, enhances reliability and flexibility, and provides new insights for network performance optimization.

现有的紫外光通信网络组网协议存在可靠性不足，在保证报文传输连续性和控制故障率方面存在不足。提出了增强型紫外大规模通信网络（eUVLSCN）协议。首先，建立了基于消息的网络仿真模型，提出了以消息传输率和消息传输成功率为中心的网络性能评价标准；其次，优化帧结构，增加消息字段，保证消息的连续传输；同时，设计了一种自适应消息压缩算法，根据消息大小和源节点与目的节点之间的传输距离动态调整压缩比。仿真结果表明，与现有的大规模移动紫外通信网络组网协议相比，eUVLSCN协议实现了更高的消息传输成功率，增强了可靠性和灵活性，为网络性能优化提供了新的见解。

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引用次数: 0

Conversion, oscillation and helical rotation of solitons in alternating inhomogeneous fractional diffraction system 交替非均匀分数衍射系统中孤子的转换、振荡和螺旋旋转

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-22 DOI: 10.1016/j.optcom.2026.132948

Xiaoqin Bai , Min Han , Rongcao Yang

In this work, we present a versatile method for achieving unidirectional and bidirectional soliton conversion, together with controllable oscillation and helical rotation of solitons by introducing longitudinally alternating inhomogeneous potentials into fractional diffraction system. Across diverse alternating potentials, the soliton undergoes unidirectional conversion into distinct and tailored states, including periodic and Hermite-Gaussian solitons, with the conversion efficiency jointly governed by Lévy index and potential parameters. Under the selected longitudinal inhomogeneous modulation, judiciously engineering the alternating second potential drives bidirectional conversion of diverse solitons—ring and necklace solitons among them. Additionally, the controlled oscillation and helical rotation of soliton pairs in alternating inhomogeneous fractional diffraction system are examined in detail. The study enriches the research of potential engineering in fractional diffraction systems, and holds promise for revealing novel physical phenomena—driven by the interplay of fractional Lévy index and dynamic potentials—that may be difficult to be observed in conventional integer-order diffraction systems. In addition, the steerable soliton conversion, oscillation and helical rotation open an excellent prospect for optical switching, optical modulation and other related technologies.

在这项工作中，我们提出了一种通用的方法，通过在分数衍射系统中引入纵向交替的非均匀势来实现单向和双向孤子转换，以及孤子的可控振荡和螺旋旋转。在不同的交变电势下，孤子单向转换为不同的定制状态，包括周期孤子和厄米-高斯孤子，转换效率由l郁闷指数和电势参数共同决定。在选择的纵向非均匀调制下，合理设计交变第二电势，驱动环形孤子和项链形孤子的双向转换。此外，还详细研究了交替非均匀分数衍射系统中孤子对的可控振荡和螺旋旋转。该研究丰富了分数阶衍射系统中势工程的研究，并有望揭示在传统的整数阶衍射系统中难以观察到的由分数阶l 指数和动态势相互作用驱动的新物理现象。此外，可操纵的孤子转换、振荡和螺旋旋转为光开关、光调制等相关技术开辟了良好的前景。

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引用次数: 0

RGB-guided phase-aware hybrid prior network for snapshot near-infrared hyperspectral imaging 快照近红外高光谱成像的rgb制导相位感知混合先验网络

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-22 DOI: 10.1016/j.optcom.2026.132922

Ajun Shao , Shuting Ma , Xingyu Zhang , Zhuang Zhao , Baohui Guo , Mingze Ma , Jing Han , Yong Peng , Yi Zhang , Lianfa Bai , Guohua Gu , Xin Liu

Near-infrared hyperspectral images (NIR-HSIs, 900–1700 nm) offer rich spectral information and strong haze-penetrating capability, but their performance is often constrained by sensor noise, leading to low signal-to-noise ratio (SNR), diminished contrast, and texture degradation. In contrast, RGB cameras offer higher SNR and richer texture details while being low-cost and widely accessible, thus serving as effective priors to enhance reconstruction of NIR-HSI. This paper propose an RGB-Guided Phase-Aware Hybrid Prior (RGB-PAHP) method within a dual-camera system, where an RGB camera is integrated into a coded aperture snapshot spectral imaging (CASSI) architecture. A multi-scale RGB feature extraction module (RGB-FE) is designed to fully exploit spatial details from RGB images, effectively guiding the reconstruction of NIR-HSI with high SNR. Furthermore, the method employs a deep unfolding network entirely based on multilayer perceptron (MLP), and introduces a Degradation-Aware Residual Gradient Descent (DARGD) module to estimate the residual of the sensing matrix

Φ

and degradation matrix

\hat{Φ}

. The iterative process is divided into shallow spatial–spectral feature extraction and deep texture refinement, balancing reconstruction quality and computational efficiency. Experimental results demonstrate that RGB-PAHP outperforms existing methods in terms of PSNR, SSIM, and SAM, thereby validating its superiority in NIR-HSI reconstruction.

近红外高光谱图像（nir - hsi, 900-1700 nm）提供了丰富的光谱信息和较强的破雾能力，但其性能往往受到传感器噪声的限制，导致信噪比低、对比度降低和纹理退化。相比之下，RGB相机具有更高的信噪比和更丰富的纹理细节，同时成本低且易于获取，因此可以作为增强NIR-HSI重建的有效先验。本文提出了一种双相机系统中的RGB引导相位感知混合先验（RGB- pahp）方法，该方法将RGB相机集成到编码孔径快照光谱成像（CASSI）架构中。设计多尺度RGB特征提取模块（RGB- fe），充分挖掘RGB图像的空间细节，有效指导高信噪比的NIR-HSI重建。此外，该方法采用完全基于多层感知器（MLP）的深度展开网络，并引入退化感知残差梯度下降（DARGD）模块来估计感知矩阵Φ和退化矩阵Φ -的残差。迭代过程分为浅层空间光谱特征提取和深层纹理细化，平衡重建质量和计算效率。实验结果表明，RGB-PAHP在PSNR、SSIM和SAM方面优于现有方法，从而验证了其在NIR-HSI重建中的优越性。

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引用次数: 0

Crosstalk suppression in mode-division-multiplexing optical switching nodes using a single SOA-based regenerator 基于单一soa再生器的模分复用光交换节点串扰抑制

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-22 DOI: 10.1016/j.optcom.2026.132945

Xinyu Ma, Baojian Wu, Xintong Lu, Yanjun Chen, Yihan Wang, Feng Wen, Kun Qiu

Mode division multiplexing (MDM) technology has been regarded as one of the most effective methods capable of improving fiber transmission capacity. In the case, modal crosstalk in few-mode fibers and nodes would become the potential limiting factor of long-haul fiber transmission and large network coverage. We propose an all-optical crosstalk suppression scheme based on a single semiconductor optical amplifier (SOA), with application to the optical MDM switching nodes. The feasibility of this scheme is experimentally demonstrated by optimizing the injection current, pump-to-signal power ratio (PSPR) and input signal-to-crosstalk ratio (SXR). The suppression performance for identical-frequency crosstalk is evaluated by inserting the single-SOA regenerator into a two-mode switching node and the error vector magnitude (EVM) for 10 Gb/s QPSK signals can be reduced by 13 % relative to the case without regeneration when the input SXR is 6 dB. On the basis of the single-SOA regenerator, the cascading performance of switching nodes and a double-stage SOA scheme for wavelength preserving are also discussed by simulation. It is shown that the SOA-based crosstalk suppression scheme is applied to the future multi-dimensional switching nodes and networks.

模分复用（MDM）技术被认为是提高光纤传输容量的最有效方法之一。在这种情况下，在少模光纤和节点中的模态串扰将成为长距离光纤传输和大网络覆盖的潜在限制因素。提出了一种基于单半导体光放大器（SOA）的全光串扰抑制方案，并应用于光MDM交换节点。通过优化注入电流、泵信功率比（PSPR）和输入信串比（SXR），实验验证了该方案的可行性。通过在双模交换节点中插入单soa再生器对同频串扰的抑制性能进行了评估，当输入SXR为6 dB时，10gb /s QPSK信号的误差矢量幅度（EVM）相对于不再生的情况可降低13%。在单SOA再生器的基础上，通过仿真讨论了交换节点的级联性能和双级SOA保波方案。结果表明，基于soa的串扰抑制方案适用于未来的多维交换节点和网络。

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引用次数: 0

Realizing mid-infrared refractive index and temperature sensing of an all-dielectric metasurface based on Q-BIC 基于Q-BIC的全介质超表面中红外折射率和温度传感的实现

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-22 DOI: 10.1016/j.optcom.2026.132944

Xingyu Feng, Xinyan Wang, Yaowei Dai, Peng Gao, Cong Chen, Ying Zhang, Junfeng Fang, Hongfei Ma, Qiyao Wang, Hai Liu

The absorption or resonance wavelengths of certain gas molecules and biological macromolecules lie within the mid-infrared band, leading many researchers to focus on sensor design for this spectral region. However, current mid-infrared metasurface sensors typically possess only a single refractive index (RI) sensing parameter, with limited research dedicated to dual-parameter sensing of both RI and temperature. Furthermore, Quasi-Bound States in the Continuum (Q-BIC) can enhance light-matter interactions, thereby improving metasurface sensing performance. Therefore, this study proposes a high-performance, all-dielectric metasurface-based dual-parameter sensor operating in the mid-infrared band, leveraging Q-BIC. A simple perforation design breaks the structural symmetry, forming a magnetic dipole-dominated Q-BIC, which correlates the environmental RI with the material intrinsic RI, enabling exceptional dual-parameter sensing in the mid-infrared. For RI sensing, the maximum sensitivity achieved is 510.12 nm/RIU, the highest Figure of Merit (FoM) reaches 739.37 RIU⁻¹, and the maximum Quality factor (Q-factor) is 11189.17. For temperature sensing, the maximum sensitivity is 0.30376 nm/°C, the highest FoM reaches 0.2217 °C^-1, and the maximum Q-factor is 2496.54, both demonstrating excellent linear responses. Additionally, this structure can function as a polarization-dependent optical switch, with a transmission difference reaching 0.99448. This metasurface sensor holds significant application potential in fields such as security monitoring and biomedical detection.

某些气体分子和生物大分子的吸收或共振波长位于中红外波段，这使得许多研究人员将重点放在该光谱区域的传感器设计上。然而，目前的中红外超表面传感器通常只有单一的折射率（RI）传感参数，对RI和温度双参数传感的研究有限。此外，连续介质中的准束缚态（Q-BIC）可以增强光-物质相互作用，从而提高超表面传感性能。因此，本研究提出了一种基于Q-BIC的高性能、全介质超表面双参数传感器，工作在中红外波段。简单的射孔设计打破了结构的对称性，形成了磁偶极子主导的Q-BIC，将环境RI与材料固有RI联系起来，实现了中红外特殊的双参数传感。对于RI传感，实现的最大灵敏度为510.12 nm/RIU，最高品质因数（FoM）达到739.37 RIU−1，最大质量因子（Q-factor）为11189.17。对于温度传感，最大灵敏度为0.30376 nm/°C，最高FoM达到0.2217°C-1，最大q因子为2496.54，均表现出良好的线性响应。此外，该结构还可以作为偏振相关的光开关，传输差达到0.99448。这种超表面传感器在安全监测和生物医学检测等领域具有重要的应用潜力。

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引用次数: 0

Single-pixel imaging based on pseudo non-diffracting structured light modulation 基于伪无衍射结构光调制的单像素成像

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-22 DOI: 10.1016/j.optcom.2026.132951

Jingjing Wu , Xueyao Song

In the single-pixel imaging (SPI) process, the illumination patterns need to be projected onto the object surface to modulate and sample the object information. If the illumination pattern is defocused, it will cause blurring in the SPI results. This paper proposes a method using spatially multiplexed phase modulation to generate pseudo non-diffracting structured light pattern, such as random binary patterns, and applies it to SPI, thereby extending the axial imaging range of SPI. Experimental results show that the generated non-diffracting structured light can maintain its pattern stable and unchanged within the designed nondiffracting distance, achieving high-quality SPI imaging even at low sampling rates. This method can obtain clear images without requiring precise focusing, enable SPI for multiple objects along the axial direction simultaneously, and can also be applied to SPI for axially moving objects.

在单像素成像（SPI）过程中，需要将光照模式投影到物体表面，对物体信息进行调制和采样。如果照明模式散焦，将导致SPI结果模糊。本文提出了一种利用空间复用相位调制产生随机二值图等伪无衍射结构光图的方法，并将其应用于SPI，从而扩大了SPI的轴向成像范围。实验结果表明，生成的无衍射结构光在设计的无衍射距离内能够保持图案稳定和不变，即使在低采样率下也能实现高质量的SPI成像。该方法无需精确对焦即可获得清晰的图像，可以同时对多个物体沿轴向进行SPI，也可以应用于轴向运动物体的SPI。

引用次数: 0

All-fiber thulium-doped 120 MHz fundamental frequency mode-locked laser via a high-nonlinearity MNF 高非线性MNF全光纤掺铥120 MHz基频锁模激光器

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications

Pub Date : 2026-01-22 DOI: 10.1016/j.optcom.2026.132947

Silun Du , Tianshu Wang , Gang Deng , Baoqun Li , Yunhan Deng , Yibing Chen , Yuxia Song

Research on micro-nano optical materials and device technologies has received significant attention in recent years, as the integration of micro-nano fabrication with optical device engineering has dramatically accelerated the advancement of optoelectronic systems. Among various micro-nano structures, micro-nano fibers (MNFs) have emerged as highly versatile platforms for ultrafast fiber laser development due to their unique optical properties. In this work, we demonstrate an all-fiber "Figure 9" thulium-doped fiber laser incorporating a tapered MNF structure. By introducing a polarization controller (PC) and a 12 cm, highly doped, polarization-maintaining gain fiber into an otherwise non-PM cavity, a Lyot-filter-like effect is produced, enabling flexible tuning of both the output wavelength and the number of pulses. The laser generates ultrafast pulses with a fundamental repetition rate exceeding 120 MHz which significantly exceeding the typical sub-50 MHz rates of most all-fiber "Figure 9" thulium systems, a pulse duration of 376 fs, an average output power of 56.37 mW, a wavelength-tuning range greater than 35 nm, and a signal-to-noise ratio (SNR) above 55 dB. Furthermore, the impacts of the ultrashort resonator configuration and the optical characteristics of the tapered MNF on the spectral and temporal properties were systematically analyzed. The demonstrated high-repetition-rate all-fiber laser shows strong potential for applications in precision micromachining, biomedical imaging, ultrafast spectroscopy, and nonlinear optics.

近年来，微纳光学材料和器件技术的研究受到了广泛的关注，因为微纳制造与光学器件工程的结合极大地促进了光电系统的发展。在各种微纳结构中，微纳光纤以其独特的光学特性成为发展超快光纤激光器的通用平台。在这项工作中，我们展示了一个包含锥形MNF结构的全光纤掺铥光纤激光器（图9）。通过在非pm腔中引入偏振控制器（PC）和12厘米高掺杂、维持偏振增益的光纤，可以产生类似lyot滤波器的效果，从而可以灵活地调整输出波长和脉冲数量。该激光器产生的超快脉冲的基本重复频率超过120 MHz，显著超过大多数全光纤铥系统的典型低于50 MHz的频率，脉冲持续时间为376 fs，平均输出功率为56.37 mW，波长调谐范围大于35 nm，信噪比（SNR）大于55 dB。此外，系统地分析了超短谐振腔结构和锥形MNF的光学特性对其光谱和时间特性的影响。所演示的高重复率全光纤激光器在精密微加工、生物医学成像、超快光谱学和非线性光学等领域具有巨大的应用潜力。

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引用次数: 0