Single-Longitudinal-Mode Laser at 1123 nm Based on a Twisted-Mode Cavity

Yang Liu; Sasa Zhang; Zhenhua Cong; Shaojie Men; Chen Guan; Yongyao Xie; Zhaojun Liu

doi:10.3390/cryst11010058

Crystals (Jan 2021)

Single-Longitudinal-Mode Laser at 1123 nm Based on a Twisted-Mode Cavity

Yang Liu,
Sasa Zhang,
Zhenhua Cong,
Shaojie Men,
Chen Guan,
Yongyao Xie,
Zhaojun Liu

Affiliations

Yang Liu: School of Information Science & Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China
Sasa Zhang: School of Information Science & Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China
Zhenhua Cong: School of Information Science & Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China
Shaojie Men: School of Information Science & Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China
Chen Guan: School of Information Science & Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China
Yongyao Xie: School of Information Science & Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China
Zhaojun Liu: School of Information Science & Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao 266237, China

DOI: https://doi.org/10.3390/cryst11010058
Journal volume & issue: Vol. 11, no. 1
p. 58

Abstract

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A single-longitudinal-mode (SLM) Neodymiun-doped Yttrium Aluminium Garnet (Nd:YAG) laser at 1123 nm was first demonstrated with a twisted-mode (TM) cavity. By eliminating the spatial hole burning phenomenon, a stable SLM 1123 nm laser output was obtained. An efficient TM cavity was designed based on the Brewster plate with high reflection under s-polarization radiation. At an incident pump power of 7.65 W, the maximum output power of 689 mW was obtained. The corresponding optical conversion efficiency was about 9%. The center wavelength was 1122.58 nm and the line-width was <140 MHz.

Published in Crystals

ISSN: 2073-4352 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Crystallography
Website: http://www.mdpi.com/journal/crystals/

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