Modeling of the 3D spatio-temporal thermal profile of joule-class Yb3+-based laser amplifiers

9Citations
Citations of this article
9Readers
Mendeley users who have this article in their library.

Abstract

Thermal profile modification of an active material in a laser amplifier via optical pumping results in a change in the material's refractive index, and causes thermal expansion and stress, eventually leading to spatial phase aberrations, or even permanent material damage. For this purpose, knowledge of the 3D spatio-temporal thermal profile, which can currently only be retrieved via numerical simulations, is critical for joule-class laser amplifiers to reveal potentially dangerous thermal features within the pumped active materials. In this investigation, a detailed, spatio-temporal numerical simulation was constructed and tested for accuracy against surface thermal measurements of various end-pumped Yb3+-doped laser-active materials. The measurements and simulations show an excellent agreement and the model was successfully applied to a joule-class Yb3+-based amplifier currently operating in the POLARIS laser system at the Friedrich-Schiller-University and Helmholtz-Institute Jena in Germany.

Cite

CITATION STYLE

APA

Tamer, I., Keppler, S., Körner, J., Hornung, M., Hellwing, M., Schorcht, F., … Kaluza, M. C. (2019). Modeling of the 3D spatio-temporal thermal profile of joule-class Yb3+-based laser amplifiers. High Power Laser Science and Engineering, 7. https://doi.org/10.1017/hpl.2019.32

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free