High-energy mid-infrared Er,Pr:GYAP laser with LD side pumping

Optics Express 2026 Open access

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Authors: Cong Quan, Guo Chen, Dunlu Sun, Keqiang Wang, Huili Zhang, Maojie Cheng, Kunpeng Dong, Zhentao Wang, Hui Li, Shiji Dou, Zihao Tang
DOI: 10.1364/oe.601286
Cited by: 1
References: 25

Abstract

A high-energy LD side-pumped Er,Pr:GYAP laser is demonstrated in free-running and electro-optically Q-switched operations. In free-running mode, bonded and unbonded crystal rods deliver maximum output energies of 1.21 and 0.94 J with slope efficiencies of 9.54% and 7.44%, respectively, at a working frequency of 30 Hz and a pump pulse width of 1 ms. For the bonded crystal, a maximum pulse energy of 125 mJ and a pulse width of 33.55 ns were achieved in Q-switched operation at a repetition rate of 10 Hz. Increasing the pump pulse width reduces the conversion efficiency from free-running to Q-switched operation, revealing that amplified spontaneous emission (ASE) causes substantial energy loss during energy storage. These results demonstrate that the Er,Pr:GYAP is a promising gain medium for high-energy mid-infrared lasers.

Fields of Study & Subjects

Solid State Laser Technologies Laser Design and Applications Photorefractive and Nonlinear Optics

Publication details

Journal / source
Optics Express
Publisher
Optica Publishing Group
Volume
34
Issue
13
Pages
24602–24602
Publication date
16 June 2026
Language
EN