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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 11, Iss. 4 — Apr. 1, 2013
  • pp: 041402–

Residual stress near cracks of K9 glass under 1 064-nm nanosecond laser irradiation

Zhen Zhang, Hongjie Liu, Jin Huang, Xiaoyan Zhou, Xinlu Cheng, Xiaodong Jiang, Weidong Wu, and Wanguo Zheng  »View Author Affiliations


Chinese Optics Letters, Vol. 11, Issue 4, pp. 041402- (2013)


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Abstract

We present the birefringence measurements induced in K9 specimen by cracks produced by 1 064-nm Nd:YAG laser. The birefringence data are converted into units of stress, permitting the estimation of residual stress near cracks. The laser parameters and characterization of the optical material influence the value of residual stress. Residual stress in optical materials can affect fracture; thus, this factor should be considered in any formulation that involves enhanced damage resistance of optical components used in laser-induced damage experiments. The probability of the initial damage and the direction of the energy dissipation in cracks determine the residual stress distribution. Moreover, thermal-stress coupling enlarges the asymmetry of residual stress distribution. Therefore, the physical mechanism of asymmetric damage is useful for understanding the nature of optical materials under high-power laser irradiation.

© 2013 Chinese Optics Letters

OCIS Codes
(140.3330) Lasers and laser optics : Laser damage
(140.3390) Lasers and laser optics : Laser materials processing
(140.3470) Lasers and laser optics : Lasers, carbon dioxide
(160.6030) Materials : Silica

ToC Category:
Lasers and Laser Optics

Citation
Zhen Zhang, Hongjie Liu, Jin Huang, Xiaoyan Zhou, Xinlu Cheng, Xiaodong Jiang, Weidong Wu, and Wanguo Zheng, "Residual stress near cracks of K9 glass under 1 064-nm nanosecond laser irradiation," Chin. Opt. Lett. 11, 041402- (2013)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-11-4-041402

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