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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 1965–1967

Comparison of laser induced thermal fracture between polycrystalline ceramic and crystal Nd:YAG

Yu Shen, Wen-bin Liu, Nan Zong, Jiang Li, Yong Bo, Xi-qi Feng, Fang-qin Li, Yu-bai Pan, Ya-ding Guo, Peng-yuan Wang, Wei Tu, Qin-jun Peng, Jing-yuan Zhang, Wenqiang Lei, Da-fu Cui, and Zu-yan Xu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 7, pp. 1965-1967 (2014)
http://dx.doi.org/10.1364/OL.39.001965


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Abstract

Continuous wave 808 nm pump laser-induced thermal damage of polycrystalline transparent ceramic and crystalline Nd:YAG materials was investigated both experimentally and theoretically. The measured temperature agrees well with the theoretical simulation, and the maximum hoop stresses occur on the incident facet of the end-pumped rod at about 2 times of the pump beam radius w 0 , where the temperature gradient is the highest and the damage occurs first at this location. The fracture-limited laser intensity of ceramics was experimentally measured to be 6.4 ± 0.6 kW / cm 2 , nearly 64% higher than that of the crystals ( 3.9 ± 0.3 kW / cm 2 ). The deduced thermal fracture stress for ceramic was 386 ± 50 MPa , which is 64% higher than that of the crystals ( 235 ± 16 MPa ).

© 2014 Optical Society of America

OCIS Codes
(140.3330) Lasers and laser optics : Laser damage
(140.3380) Lasers and laser optics : Laser materials
(140.6810) Lasers and laser optics : Thermal effects

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 24, 2013
Revised Manuscript: February 21, 2014
Manuscript Accepted: February 21, 2014
Published: March 25, 2014

Citation
Yu Shen, Wen-bin Liu, Nan Zong, Jiang Li, Yong Bo, Xi-qi Feng, Fang-qin Li, Yu-bai Pan, Ya-ding Guo, Peng-yuan Wang, Wei Tu, Qin-jun Peng, Jing-yuan Zhang, Wenqiang Lei, Da-fu Cui, and Zu-yan Xu, "Comparison of laser induced thermal fracture between polycrystalline ceramic and crystal Nd:YAG," Opt. Lett. 39, 1965-1967 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-7-1965


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