The effect of temperature on absorption in end-pumped Yb:YAG thin disk lasers

✍ Scribed by Seyfollah Toroghi; Ahmad Khayat Jafari; Ala Hashemi Golpayegani

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 412 KB
• Volume: 41
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/j.optlastec.2008.12.004

✦ Synopsis

In this paper, the dependence of the absorbed power on the temperature in an end-pumped CW quasithree-level Yb:YAG thin disk laser is calculated. Here, we have used the temperature-dependent form of the Boltzmann occupation factors, absorption cross-section and thermal conductivity of the Yb:YAG crystal. A Monte Carlo ray tracing code and a 2D finite element analysis (FEA) with the ANSYS package have been used to calculate the absorbed power and the temperature distribution inside the Yb:YAG thin disk laser, respectively. According to the model, the temperature-dependent absorbed power turns out to be 18% less than the temperature-independent absorbed power in the top center of the Yb:YAG thin disk laser for used parameters.