Color center production by femtosecond pulse laser irradiation in LiF crystals

被引：62
|
作者：
Courrol, LC
Samad, RE
Gomes, L
Ranieri, IM
Baldochi, SL
de Freitas, AZ
Vieira, ND
机构：
[1] Fac Technol Sao Paulo, CEETEPSl, Sao Paulo, Brazil
[2] IPEN CNEN SP, CLA, Ctr Lasers & Applicat, Sao Paulo, Brazil
来源：
OPTICS EXPRESS | 2004年 / 12卷 / 02期
关键词：
D O I：
10.1364/OPEX.12.000288
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the production of color centers in LiF single crystals by ultrashort high intensity laser pulses (60fs, 10 GW). An intensity threshold for color centers creation of 2 TW/cm(2) was determined, which is slightly smaller than the continuum generation threshold. We could identify a large amount of F centers that gave rise to aggregates such as F-2, F-2(+) and F-3(+). The proposed mechanism of formation is based on multiphoton excitation that also produce short lived F-2(+) centers. It is also shown that it is possible to write tracks in the LiF crystals with dimensional control. (C) 2004 Optical Society of America.
引用
收藏
页码：288 / 293
页数：6
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