High temporal contrast 1053 nm laser source based on optical parametric amplification and second-harmonic generation. (25th January 2023)

• Record Type: Journal Article
• Authors: Shen, Liya; Li, Yanyan; Li, Wenkai; Song, Jiajun; Qian, Junyu; Sun, Jianyu; Feng, Renyu; Peng, Yujie; Leng, Yuxin
• Is Part Of: High power laser science and engineering. Volume 11(2023)
• Publication Date: 2023-01-25
• Subjects: high temporal contrast -- nonlinear effect -- optical parametric amplification; High power lasers -- Periodicals; 621.366
• DOI: 10.1017/hpl.2022.39
• Languages: English
• ISSNs: 2095-4719

Abstract

Abstract: Temporal contrast directly affects the interaction between ultraintense and ultrashort pulse lasers with matter. Seed laser sources with broad bandwidth and high temporal contrast are significant for overall temporal contrast enhancement. The technique of cascaded nonlinear processes with optical parametric amplification and second-harmonic generation is demonstrated for high temporal contrast seed source generation. Within 40 ps before the main pulse, the temporal contrast reaches over 10 11 . The pulse energy and duration of the high-contrast pulse are 112 μJ and 70 fs, respectively. Considering its high beam quality and stability, this laser source can serve as a high-quality seed for Nd:glass-based ultraintense and ultrashort pulse laser facilities.