J4 ›› 2015, Vol. 32 ›› Issue (6): 663-667.

• Laser Tech. and Devices • Previous Articles     Next Articles

Structure optimization of laser cavities pumped by flash lamps based on ray-tracing

ZHU Cheng-jun, GUO Qiang, Yi Xin,SUN Xiao-jun, BIAN Jin-tian   

  1. 1 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Anhui Provincial Key Laboratory of Photonic Devices and Materials, Hefei 230031, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China; 3 Electronic Engineering Institute, Hefei 230037, China
  • Received:2014-12-26 Revised:2015-01-12 Published:2015-11-28 Online:2015-11-05

Abstract:

Laser cavity is indispensable in solid-state laser pumped by flash-lamps,it focuses the pump light on laser rod more efficiently and evenly. To achieve high-energy output, it is necessary to consider optimizing laser cavities and increasing the pumping efficiency . Through the ray tracing technique of Monte Carlo method and establishment of reasonable model, four-lamps cavity is researched in certain diameter of laser rod. The relationships between pumping efficiency and the ratio of elliptic major axis and minor axis (a/b) are obtained. Moreover, the relationships between pumping efficiency and diameter of flash-lamps are obtained in certain a/b. The a/b of supreme pumping efficiency is obtained in certain diameter of laser rod and flash-lamp. In addition, the relationships between pumping uniformity and ratio of elliptic major axis and minor axis (a/b) are gotten on the condition of certain diameter of laser rod and uncertain diameter of flash-lamps.

Key words: solid-state laser techniques, pumping efficiency, ray tracing, laser cavity

CLC Number: