The pump structure greatly influences the characteristics of a diode side-pumped laser. To achieve high absorption efficiency and a homogeneous pump-beam distribution simultaneously, a systemic algorithm has been established to optimize the pump structure, where multiple reflections occur on the internal wall of the reflector inside the pump chamber. A novel design of an efficient, highly reliable, and good beam quality diode side-pumped solid-state laser is presented. Effort has been done to obtain a highly uniform pumping intensity in the active area, which simultaneously reduces the effects of thermal gradient. In this design a novel lens duct configuration is used. By this way a uniform power distribution and a maximum absorption of pump power is resulted. Numerical analysis also indicates the superiority of the design to other methods such as direct and diffusive pumping techniques.

Date Published: 17 November 2010
PDF: 7 pages
Proc. SPIE 7843, High-Power Lasers and Applications V, 78430G (17 November 2010); doi: 10.1117/12.866636

Published in SPIE Proceedings Vol. 7843:
High-Power Lasers and Applications V
Upendra N. Singh; Dianyuan Fan; Jianquan Yao; Robert F. Walter, Editor(s)