Generation of 6-μJ ultrafast pulses from an Er-doped laser system

IF 4.6 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-09-17 DOI:10.1016/j.rinp.2025.108439

Tingting Liu , Mei Yang , Ming Yan , Zhengru Guo , Qiang Hao , Kun Huang , Yan Dai , Heping Zeng

引用次数: 0

Abstract

High-power lasers at 1.55 μm have mostly been constructed in the free-space configuration or the non-polarization-maintaining (PM) fiber structures, which significantly limits the practical deployment in widespread applications. Here, we reported a robust linear-polarized Er-doped laser system, except for the bulky grating pulse compressor. The laser system can deliver high-energy ultrashort pulses at μJ level in a wide range of programmable repetition rates from about 2.1 MHz down to 200 kHz. Specifically, a high pulse energy of 6 μJ, unprecedented in the PM fiber scheme, is achieved at 200 kHz repetition rate, yielding corresponding MW-level peak power. The beam quality is verified by an M²-value of 1.4. The presented laser system features high pulse energy, high peak power, and good beam quality, which constitutes a useful source for diverse applications such as material processing, biomedical imaging, and laser machining.

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掺铒激光系统产生6 μ j超快脉冲

高功率1.55 μm激光器大多采用自由空间结构或非保偏（PM）光纤结构，这极大地限制了其广泛应用的实际部署。在这里，我们报道了一个鲁棒的线偏振掺铒激光系统，除了笨重的光栅脉冲压缩器。该激光系统可以在2.1 MHz到200 kHz的可编程重复频率范围内输出μJ级的高能超短脉冲。具体而言，在200 kHz重复频率下实现了6 μJ的高脉冲能量，这在PM光纤方案中是前所未有的，并产生了相应的mw级峰值功率。通过m2值1.4验证了光束质量。该激光系统具有脉冲能量高、峰值功率高、光束质量好等特点，可用于材料加工、生物医学成像和激光加工等多种应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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