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Article
Experimental and Theoretical Investigation of Pump Laser Induced Thermal Damage for Polycrystalline Ceramic and Crystal Nd:YAG
Journal of Selected Topics in Quantum Electronics (2015)
  • Yu Shen, Chinese Academy of Sciences
  • Yong Bo, Chinese Academy of Sciences
  • Nan Zong, Chinese Academy of Sciences
  • Ya-Ding Guo, Chinese Academy of Sciences
  • Qin-Jun Peng, Chinese Academy of Sciences
  • Jiang Li, Chinese Academy of Sciences
  • Yu-Bai Pan, Chinese Academy of Sciences
  • Jing-yuan Zhang, Chinese Academy of Sciences
  • Da-Fu Cui, Chinese Academy of Sciences
  • Zu-Yan Xu, Chinese Academy of Sciences
Abstract
Continuous wave 808-nm pump laser induced thermal damage of polycrystalline ceramic and crystalline Nd:YAG materials were investigated both experimentally and theoretically in this paper. The measured temperature agrees well with the theoretical simulation and the maximum hoop stress occurs on the incident facet of the end pumped rod at about √2 times of the pump beam radius w0 , where the temperature gradient is the highest and the damage occurs first. The pumping laser power makes no influence on the maximum hoop stress location, when the position of the laser beam is unchanged. The thermal damage investigation indicates that the transparent ceramic Nd:YAG has greater resistance than thermal fracture and it is 64% higher than that of the crystals.
Keywords
  • Ceramics,
  • Crystal,
  • Solid lasers,
  • Thermal resistance,
  • Thermal stress
Disciplines
Publication Date
2015
Citation Information
Yu Shen, Yong Bo, Nan Zong, Ya-Ding Guo, et al.. "Experimental and Theoretical Investigation of Pump Laser Induced Thermal Damage for Polycrystalline Ceramic and Crystal Nd:YAG" Journal of Selected Topics in Quantum Electronics Vol. 21 Iss. 1 (2015) p. 1 - 8
Available at: http://works.bepress.com/jing-yuan_zhang/27/