1 kHz, 511 mJ sub-nanosecond green laser via SHG of a slab-based MOPA system

Lie Liu; Wentao Wang; Shengwei Bian; Haizhou Huang; Xingyu Yao; Chao Wang; Xiaojun Tang; Kunpeng Lv; Xuefeng Chao; Lu Chen; Huaixi Chen; Xianzeng Zhang; Chunqing Gao

doi:10.1364/OE.580484

1 kHz, 511 mJ sub-nanosecond green laser via SHG of a slab-based MOPA system

Lie Liu
, Wentao Wang
, Shengwei Bian
, Haizhou Huang
, Xingyu Yao
, Chao Wang
, Xiaojun Tang
, Kunpeng Lv
, Xuefeng Chao
, Lu Chen
, Huaixi Chen
, Xianzeng Zhang
, Chunqing Gao

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate a high pulse repetition frequency (PRF), high-energy sub-nanosecond green laser based on a conductively cooled end-pumped slab (CCEPS) MOPA as the fundamental laser source. In the fundamental stage, non-vacuum tube optics is firstly proposed by developing cylindrical lens based 1 dimensional 4-f imaging system in avoiding potential air breakdown during laser propagation. Three CCEPS based amplifiers are developed with maximum amplified energy of 1080 mJ, corresponding to a peak power of 1.48 GW. In the SHG stage, maximum green laser energy of 511 mJ with an instability of 1.7% and a pulse width of 697 ps is obtained at 1 kHz, corresponding to a peak power of 0.7 GW and a SHG efficiency is 47.2%. The results pave a way for achieving higher sub-nanosecond green laser energy at high PRF in a compact and feasible manner.

Original language	English
Pages (from-to)	50334-50342
Number of pages	9
Journal	Optics Express
Volume	33
Issue number	24
DOIs	https://doi.org/10.1364/OE.580484
Publication status	Published - 1 Dec 2025
Externally published	Yes

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10.1364/OE.580484

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title = "1 kHz, 511 mJ sub-nanosecond green laser via SHG of a slab-based MOPA system",

abstract = "We demonstrate a high pulse repetition frequency (PRF), high-energy sub-nanosecond green laser based on a conductively cooled end-pumped slab (CCEPS) MOPA as the fundamental laser source. In the fundamental stage, non-vacuum tube optics is firstly proposed by developing cylindrical lens based 1 dimensional 4-f imaging system in avoiding potential air breakdown during laser propagation. Three CCEPS based amplifiers are developed with maximum amplified energy of 1080 mJ, corresponding to a peak power of 1.48 GW. In the SHG stage, maximum green laser energy of 511 mJ with an instability of 1.7\% and a pulse width of 697 ps is obtained at 1 kHz, corresponding to a peak power of 0.7 GW and a SHG efficiency is 47.2\%. The results pave a way for achieving higher sub-nanosecond green laser energy at high PRF in a compact and feasible manner.",

author = "Lie Liu and Wentao Wang and Shengwei Bian and Haizhou Huang and Xingyu Yao and Chao Wang and Xiaojun Tang and Kunpeng Lv and Xuefeng Chao and Lu Chen and Huaixi Chen and Xianzeng Zhang and Chunqing Gao",

note = "Publisher Copyright: {\textcopyright} 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.",

year = "2025",

month = dec,

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doi = "10.1364/OE.580484",

language = "English",

volume = "33",

pages = "50334--50342",

journal = "Optics Express",

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TY - JOUR

T1 - 1 kHz, 511 mJ sub-nanosecond green laser via SHG of a slab-based MOPA system

AU - Liu, Lie

AU - Wang, Wentao

AU - Bian, Shengwei

AU - Huang, Haizhou

AU - Yao, Xingyu

AU - Wang, Chao

AU - Tang, Xiaojun

AU - Lv, Kunpeng

AU - Chao, Xuefeng

AU - Chen, Lu

AU - Chen, Huaixi

AU - Zhang, Xianzeng

AU - Gao, Chunqing

PY - 2025/12/1

Y1 - 2025/12/1

N2 - We demonstrate a high pulse repetition frequency (PRF), high-energy sub-nanosecond green laser based on a conductively cooled end-pumped slab (CCEPS) MOPA as the fundamental laser source. In the fundamental stage, non-vacuum tube optics is firstly proposed by developing cylindrical lens based 1 dimensional 4-f imaging system in avoiding potential air breakdown during laser propagation. Three CCEPS based amplifiers are developed with maximum amplified energy of 1080 mJ, corresponding to a peak power of 1.48 GW. In the SHG stage, maximum green laser energy of 511 mJ with an instability of 1.7% and a pulse width of 697 ps is obtained at 1 kHz, corresponding to a peak power of 0.7 GW and a SHG efficiency is 47.2%. The results pave a way for achieving higher sub-nanosecond green laser energy at high PRF in a compact and feasible manner.

AB - We demonstrate a high pulse repetition frequency (PRF), high-energy sub-nanosecond green laser based on a conductively cooled end-pumped slab (CCEPS) MOPA as the fundamental laser source. In the fundamental stage, non-vacuum tube optics is firstly proposed by developing cylindrical lens based 1 dimensional 4-f imaging system in avoiding potential air breakdown during laser propagation. Three CCEPS based amplifiers are developed with maximum amplified energy of 1080 mJ, corresponding to a peak power of 1.48 GW. In the SHG stage, maximum green laser energy of 511 mJ with an instability of 1.7% and a pulse width of 697 ps is obtained at 1 kHz, corresponding to a peak power of 0.7 GW and a SHG efficiency is 47.2%. The results pave a way for achieving higher sub-nanosecond green laser energy at high PRF in a compact and feasible manner.

UR - https://www.scopus.com/pages/publications/105022904333

U2 - 10.1364/OE.580484

DO - 10.1364/OE.580484

M3 - Article

AN - SCOPUS:105022904333

SN - 1094-4087

VL - 33

SP - 50334

EP - 50342

JO - Optics Express

JF - Optics Express

IS - 24

ER -

1 kHz, 511 mJ sub-nanosecond green laser via SHG of a slab-based MOPA system

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