Solid State and Liquid Lasers

Laser Physics

, 19:2159

First online:

High power and highly efficient Nd:YAG laser emitting at 1123 nm

  • S. S. ZhangAffiliated withSchool of Information Science and Engineering, Shandong University
  • , Q. P. WangAffiliated withSchool of Information Science and Engineering, Shandong University
  • , X. Y. ZhangAffiliated withSchool of Information Science and Engineering, Shandong University Email author 
  • , Z. J. LiuAffiliated withSchool of Information Science and Engineering, Shandong University
  • , W. J. SunAffiliated withSchool of Information Science and Engineering, Shandong University
  • , S. W. WangAffiliated withCrystech Inc.

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Abstract

A diode-end-pumped continuous-wave (CW) Nd:YAG laser emitting at 1123 nm is realized efficiently in a 25-mm-long cavity. A composite Nd:YAG (cNd:YAG) crystal is selected as the gain medium. With an incident diode power of 26.1 W, an output power of up to 9.3 W is obtained, corresponding to an optical-to-optical conversion efficiency of 35.6%. The laser performances at 1123 nm are compared between composite Nd:YAG and common Nd:YAG crystals. The results show that composite Nd:YAG is a better choice for 1123-nm laser generations.