Work

Orthogonally polarized dual-wavelength operation at 898 and 904 nm with tunable power ratio in Nd:SA/Nd:LMA crystals

Year: 2025

Type: article

Abstract: A diode-pumped continuous-wave (CW) orthogonally polarized dual-wavelength (OPDW) Nd:SrAl 12 O 19 /Nd:LaMgAl 11 O 19 (Nd:SA/Nd:LMA) laser at 898 and 904 nm with tunable power ratio on 4 F 3/2 → 4 I 9 / 2 quasi-three-level transition is demonstrated for the first time. The pump wavelength and the waist position of the pump beam were optimized to achieve high efficiency and balanced output powers of OPDW laser. The OPDW laser at 898 and 904 nm was obtained with the highest total output power of 6.59 W and the power ratio of 1:1. The highest total slope efficiency and total optical-to-optical conversion efficiency related to the absorbed pump power at 796.85 nm were 39.7% and 36.2%, respectively. The OPDW laser at 898 and 904 nm has important application prospects in fields such as biomedicine, scientific research, gas detection, and remote sensing technology.

Source: Scientific Reports

DOI: 10.1038/s41598-025-96378-9

Authors: Chu Chu, Xinghua Yang, Shuang Wang, Changli Li, Yongliang Li

Institutions: Harbin Engineering University, Changchun University of Science and Technology

Language: English

Topic: Solid State Laser Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,690

Funders: Natural Science Foundation of Jilin Province, National Natural Science Foundation of China, People's Government of Jilin Province