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相关概念视频

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Updated: Jun 24, 2025

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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自动Q开关单频全纤维激光器

Jie Mei, Haolin Yang, Sailing He

    Applied optics
    |June 10, 2024
    PubMed
    概括
    此摘要是机器生成的。

    我们开发了一种自动Q开关单频全纤维激光器,使用Er:Yb联合合纤维作为增益中等和和吸收器. 这种新的光纤激光器产生了狭窄的线宽的microjoule脉冲,展示了可调节的波长能力.

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    科学领域:

    • 纤维激光技术 纤维激光技术
    • 非线性光学是一种非线性光学.
    • 量子电子学 量子电子学

    背景情况:

    • 开发稳定,窄线宽脉冲光纤激光器对于各种应用至关重要.
    • 实现单频 (SF) 操作的传统方法往往涉及复杂的设置.
    • 将可和吸收器 (SAs) 集成到激光腔中可以实现自动Q切换以实现脉冲操作.

    研究的目的:

    • 提出和演示一个自动Q开关单频 (SF) 全光纤激光器.
    • 使用联合合的Er:Yb纤维作为增强介质和纤维类型的和吸收器 (SA).
    • 为了实现稳定的SF运行,使用级联式子腔设计.

    主要方法:

    • 采用内腔Er:Yb联合合纤维用于激光和通过基态再吸收进行自Q切换.
    • 使用两个3dB光学合器 (OCs) 构建一个级联子腔,用于窄带宽模式选择.
    • 使用具有高损坏值的纤维类型的SA来实现microjoule脉冲能量.

    主要成果:

    • 获得了微日级自Q切换SF脉冲,其窄线宽为~252 kHz.
    • 测量脉冲宽度为~1.766μs,导致时间带宽乘积接近高斯变换极限 (~0.445).
    • 实现了脉冲SF激光器的最大输出功率为~100mW,通过纤维布拉格格 (FBG) 拉伸可调节波长.

    结论:

    • 提出的自动Q开关SF全纤维激光器为产生高质量脉冲提供了一个紧而高效的解决方案.
    • 集成的纤维类型SA和级联子腔设计有效地实现了稳定的SF脉冲运行.
    • 证明的可调性和性能特性使得这种激光器适用于各种光子应用.