High efficiency single frequency 355 nm all-solid-state UV laser. (13th April 2016)

• Record Type: Journal Article
• Authors: Xie, Xiaobing; Wei, Daikang; Ma, Xiuhua; Li, Shiguang; Liu, Jiqiao; Zhu, Xiaolei; Chen, Weibiao
• Is Part Of: Laser physics. Volume 26:Number 5(2016:May)
• Publication Date: 2016-04-13
• Subjects: UV -- harmonic generation and mixing -- single-frequency -- all-solid-state; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1054-660X/26/5/055403
• Languages: English
• ISSNs: 1054-660X

Abstract

Abstract: A novel conductively cooled high energy single-frequency 355 nm all-solid-state UV laser is presented based on sum-frequency mixing technique. In this system, a pulsed seeder laser at 1064 nm wavelength, modulated by an AOM, is directly amplified by the cascaded multi-stage hybrid laser amplifiers, and two LBO crystals are used for the SHG and SFG, finally a maximum UV pulse energy of 226 mJ at 355 nm wavelength is achieved with frequency-tripled conversion efficiency as high as 55%, the pulse width is around 12.2 ns at the repetition frequency of 30 Hz. The beam quality factor M 2 of the output UV laser is measured to be 2.54 and 2.98 respectively in two orthogonal directions.