Thermal investigation of a 120-W Tm:YAG laser

Wenjie Xie; Kin Seng Lai; Yuan Liang Lim; Ruifen Wu; Ernest Lau; Hui Feng Wong

doi:10.1117/12.446596

29 October 2001 Thermal investigation of a 120-W Tm:YAG laser

Wenjie Xie, Kin Seng Lai, Yuan Liang Lim, Ruifen Wu, Ernest Lau, Hui Feng Wong

Proceedings Volume 4595, Photonic Systems and Applications; (2001) https://doi.org/10.1117/12.446596
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

We demonstrated a 120-W side-pumped Tm:YAG laser with compound parabolic concentrators (CPC's) to couple the pump light into the laser rod. The optical-to-optical efficiency of this laser is 25.2% and the slope efficiency is 31.2%. At such high average power operation, we encountered severe thermal lensing in our Tm:YAG laser rod which prevented us from increasing the diode pump power due to the thermal rollover as the laser cavity become unstable. In this paper, Temperature was measured using IR camera. Temperature and stress distributions are obtained using finite element method. Those data can be used to estimate the fracture limit, the thermal lensing, the thermal distortion of the Tm:YAG laser and subsequently correct the thermal distortion using diffractive optical devices etc.

Citation Download Citation

Wenjie Xie, Kin Seng Lai, Yuan Liang Lim, Ruifen Wu, Ernest Lau, and Hui Feng Wong "Thermal investigation of a 120-W Tm:YAG laser", Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); https://doi.org/10.1117/12.446596

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available