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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 10 — May. 11, 2009
  • pp: 8552–8557

Formation and partial recovery of optically induced local dislocations inside CaF2 single crystal

Bin Qian, Juan Song, Guoping Dong, Liangbi Su, Bin Zhu, Xiaofeng Liu, Shengzhi Sun, Qiang Zhang, and Jianrong Qiu  »View Author Affiliations

Optics Express, Vol. 17, Issue 10, pp. 8552-8557 (2009)

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We reported on the formation of a microstructure (skew cross-shaped pattern) in bulk CaF2 single crystal, which originates from local dislocations and microcracks around the focal point of a single infrared femtosecond laser beam. Relations between morphology of the microstructure and the laser power as well as the number of laser pulses were discussed. Furthermore, it was observed that the optically induced microstructure could be partially erased by additional irradiation of its neighboring area with femtosecond laser pulses. High-resolution transmission electron microscope (HRTEM) observations confirmed the disappearance of some local dislocations after the additional femtosecond laser irradiation.

© 2009 Optical Society of America

OCIS Codes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4400) Nonlinear optics : Nonlinear optics, materials

ToC Category:
Nonlinear Optics

Original Manuscript: February 19, 2009
Revised Manuscript: April 10, 2009
Manuscript Accepted: May 1, 2009
Published: May 6, 2009

Bin Qian, Juan Song, Guoping Dong, Liangbi Su, Bin Zhu, Xiaofeng Liu, Shengzhi Sun, Qiang Zhang, and Jianrong Qiu, "Formation and partial recovery of optically induced local dislocations inside CaF2 single crystal," Opt. Express 17, 8552-8557 (2009)

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