Issue 35, 2023

Temperature distribution and the laser performance of LD end-pumped LuYSGG/Er:LuYSGG composite crystal

Abstract

In this study, we demonstrate the laser performance of LD end-pumped LuYSGG/Er:LuYSGG composite crystal. Thermal distribution simulations by varying the pump spot size indicate that the suitable pump power density is a key factor affecting the laser performance, which is consistent with the experimental result. The maximum output power and slope efficiency achieved were 1266 mW and 24.3% in CW mode, which increased by 39.3% and 12.5%, respectively, compared with unbonded Er:LuYSGG crystal. The laser wavelength location was at 2797.6 nm, and the power fluctuation was about 5.1%. Moreover, the beam quality factors Mx2 and My2 improved to 1.33 and 1.42 from 1.78 and 1.83, respectively. The results suggested that an LD end-pumped LuYSGG/Er:LuYSGG composite crystal with a high beam quality can be applied as a seed source in the mid-infrared (MIR) multi-stage amplification laser apparatus.

Graphical abstract: Temperature distribution and the laser performance of LD end-pumped LuYSGG/Er:LuYSGG composite crystal

Article information

Article type
Paper
Submitted
16 Apr 2023
Accepted
26 Jul 2023
First published
28 Jul 2023
This article is Open Access
Creative Commons BY-NC license

CrystEngComm, 2023,25, 5012-5020

Temperature distribution and the laser performance of LD end-pumped LuYSGG/Er:LuYSGG composite crystal

Z. Wang, D. Sun, H. Zhang, J. Luo, C. Quan, Z. Han, Y. Qiao, Y. Chen and M. Cheng, CrystEngComm, 2023, 25, 5012 DOI: 10.1039/D3CE00374D

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