High-energy, high-repetition-rate LD side-pumped burst-mode green laser

IF 5 2区物理与天体物理 Q1 OPTICS Optics and Laser Technology Pub Date : 2025-04-03 DOI:10.1016/j.optlastec.2025.112841

Teng Kan , Peilin Li , Qiang Liu

引用次数: 0

Abstract

We present a LD-side-pumped Nd:YAG-based burst-mode green laser system that utilizes an electro-optical (EO) Q-switched oscillator followed by a folded power amplifier design and a second harmonic generator to achieve a compact-footprint (0.36 m²) architecture. The maximum pulse energy of 248 mJ at 1064 nm and 102 mJ at 532 nm was obtained at a pulse repetition rate of 10 kHz and burst duration of 5 ms, corresponding to a second-harmonic conversion efficiency of up to 41%. At a higher repetition rate of 50 kHz, an output of over 40 mJ per pulse at 532 nm, with a pulse width of 11.52 ns and a total burst energy of 10 J, was achieved. To the best of our knowledge, this represents the highest reported LD-pumped burst-mode green laser in terms of pulse energy and pulse repetition rate.

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高能，高重复率LD侧泵浦爆发模式绿色激光器

我们介绍了一种基于 LD 侧泵浦 Nd:YAG 的猝发模式绿光激光系统，该系统利用电光（EO）Q 开关振荡器、折叠式功率放大器设计和二次谐波发生器实现了紧凑的结构（0.36 m2）。在脉冲重复率为 10 kHz、猝发持续时间为 5 ms 时，1064 nm 波长的最大脉冲能量为 248 mJ，532 nm 波长的最大脉冲能量为 102 mJ，相应的二次谐波转换效率高达 41%。在更高的 50 kHz 重复频率下，532 nm 波段的每个脉冲输出超过 40 mJ，脉冲宽度为 11.52 ns，总猝发能量为 10 J。据我们所知，就脉冲能量和脉冲重复率而言，这是目前所报道的最高的 LD 泵浦猝发模式绿光激光器。

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

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems