Ultraviolet spectral broadening by stimulated rotational Raman scattering on nitrogen pumped with signal laser injection

Wang Xiangbing; Chai Xiangxu; Li Ping; Zhang Bo; Zhu Qihua; Tian Xiaocheng; Wang Ju; Zong Zhaoyu; Zhou Song; Yao Ke; Li Sen; Zhao Junpu; Peng Zhitao

doi:10.1063/5.0220473

Volume 10 Issue 1

Jan. 2025

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Article Navigation > Matter and Radiation at Extremes > 2025 > 10(1): 017401

Wang Xiangbing, Chai Xiangxu, Li Ping, Zhang Bo, Zhu Qihua, Tian Xiaocheng, Wang Ju, Zong Zhaoyu, Zhou Song, Yao Ke, Li Sen, Zhao Junpu, Peng Zhitao. Ultraviolet spectral broadening by stimulated rotational Raman scattering on nitrogen pumped with signal laser injection[J]. Matter and Radiation at Extremes, 2025, 10(1): 017401. doi: 10.1063/5.0220473

Citation:

Wang Xiangbing, Chai Xiangxu, Li Ping, Zhang Bo, Zhu Qihua, Tian Xiaocheng, Wang Ju, Zong Zhaoyu, Zhou Song, Yao Ke, Li Sen, Zhao Junpu, Peng Zhitao. Ultraviolet spectral broadening by stimulated rotational Raman scattering on nitrogen pumped with signal laser injection[J]. Matter and Radiation at Extremes, 2025, 10(1): 017401. doi: 10.1063/5.0220473

Citation:

Wang Xiangbing, Chai Xiangxu, Li Ping, Zhang Bo, Zhu Qihua, Tian Xiaocheng, Wang Ju, Zong Zhaoyu, Zhou Song, Yao Ke, Li Sen, Zhao Junpu, Peng Zhitao. Ultraviolet spectral broadening by stimulated rotational Raman scattering on nitrogen pumped with signal laser injection[J]. Matter and Radiation at Extremes, 2025, 10(1): 017401. doi: 10.1063/5.0220473

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Ultraviolet spectral broadening by stimulated rotational Raman scattering on nitrogen pumped with signal laser injection

doi: 10.1063/5.0220473

Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China

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Corresponding author: a)Authors to whom correspondence should be addressed: chai_xiangxu@126.com and liping1984@caep.cn
Received Date: 2024-05-25
Accepted Date: 2024-09-13

Available Online: 2025-01-01

Publish Date: 2025-01-02

Abstract

Abstract

We present experimental results on kilojoule ultraviolet laser output with 1% spectral broadening. Through stimulated rotational Raman scattering (SRRS) with signal laser injection, we achieve effective spectral broadening in short-range propagation, with good retention of the original near-field distribution and time waveform. Theoretical calculations show that 2% bandwidth spectral broadening can be achieved by injecting 20 kW/cm² signal light at 2.2 GW/cm² flux of the pump laser. In addition, high-frequency modulation in the near field can be effectively avoided through replacement of the original random noise signal light by the controllable signal light. The SRRS in the atmospheric environment excited with signal laser injection can provide wide-band light output with controllable beam quality without long-distance propagation, representing an important potential route to realization of broadband laser drivers.

Conflict of Interest
The authors have no conflicts to disclose.
Xiangbing Wang: Conceptualization (equal); Visualization (equal); Writing – original draft (equal); Writing – review & editing (equal). Xiangxu Chai: Conceptualization (equal); Software (equal); Supervision (equal); Writing – original draft (equal); Writing – review & editing (equal). Ping Li: Funding acquisition (equal); Supervision (equal); Validation (equal). Bo Zhang: Conceptualization (equal); Project administration (equal); Software (equal). Qihua Zhu: Conceptualization (equal); Supervision (equal); Validation (equal). Xiaocheng Tian: Validation (equal). Ju Wang: Resources (equal); Validation (equal). Zhaoyu Zong: Investigation (equal); Validation (equal). Song Zhou: Validation (equal). Ke Yao: Validation (equal). Sen Li: Validation (equal). Junpu Zhao: Validation (equal). Zhitao Peng: Validation (equal).
Author Contributions
The data that support the findings of this study are available from the corresponding authors upon reasonable request.

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