Self-formation of quasiperiodic void structure in CaF2 induced by femtosecond laser irradiation

被引：19
|
作者：
Hu, Xiao [1 ]
Dai, Ye
Yang, Luyun
Song, Juan
Zhu, Congshan
Qiu, Jianrong
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 02期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2430911
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the self-formation of quasiperiodic void structure with the length of several hundred micrometers inside the CaF2 crystal. The quasiperiodical voids along the propagation direction of the laser beam were formed spontaneously after the irradiation of a single femtosecond laser beam which was focused at a fixed point inside the crystal sample. The length of the void array varied with the focal depth beneath the sample surface. The possible mechanism of the self-formed void structure was discussed. (c) 2007 American Institute of Physics.
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页数：3
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