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Updated: Jul 4, 2025

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

用于模式锁定激光脉冲生成的Ge-聚合物桥波导.

Jinyuan Liu, Zhenming Ding, Ziyang Zhang

|February 1, 2024

概括

一个新的聚合物桥梁激光系统使用无形 (α-Ge) 作为低成本的和吸收器. 这种设计实现了模式锁定激光输出,具有压缩的脉冲宽度和可调节的重复率.

科学领域:

光子学和激光技术的发展
材料科学材料科学材料科学

背景情况:

模式锁定激光器对于需要超短脉冲的应用至关重要.
开发紧,具有成本效益和可调节的激光系统仍然是一个关键的挑战.

研究的目的:

推出一种新的"三进制"模式锁定激光系统.
为了证明无形 (α-Ge) 作为被动和吸收剂的应用.
为了实现一个紧和可调节的激光输出.

主要方法:

使用化 (InP) 增益芯片,纤维布拉格格 (FBG) 和Ge-聚合物混合波导构建激光系统.
将50nm无形Ge (α-Ge) 层集成到混合波导中以充当和吸收器.
使用 femtosecond 激光传输实验来验证脉冲宽度压缩.

主要成果:

展示了一个模式锁定激光输出,重复率约为50 MHz.
实现了147 ps的脉冲宽度,信号噪声比大于50 dB.
验证了α-Ge层的脉冲宽度压缩效应.

结论:

开发的聚合物桥梁激光系统为脉冲激光生成提供了一个紧且可调节的解决方案.

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无形 (α-Ge) 薄膜已被证明是可行,实用和低成本的可和吸收器,用于光子设备.

这项工作突出了通过聚合物波导集成的离散光子组件的潜力.