Femtosecond-laser-encoded distributed-feedback color center laser in lithium fluoride single crystal

被引：0
|
作者：
Kawamura, K. [1 ]
Kurobori, T. [2 ]
Hirano, M. [1 ]
Hosono, H. [1 ,3 ]
机构：
[1] Japan Sci & Technol, Transparent Electroact Mat Project, Midori Ku, 4259 Ngatsuta, Yokohama, Kanagawa 2268503, Japan
[2] Kanazawa Univ, Grad Sch Nat Sci & Technol, Div Appl Phys, Kanazawa, Ishikawa 9201192, Japan
[3] Tokyo Inst Technol, Frontier Collaborat Res Ctr, Midori Ku, Yokohama, Kanagawa 2268503, Japan
来源：
FEMTOSECOND PHENOMENA AND NONLINEAR OPTICS III | 2006年 / 6400卷
关键词：
laser-matter interactions; photoinduced effects; ultrafast processes and measurements;
D O I：
10.1117/12.689536
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Focused infrared femtosecond laser pulses (wavelength similar to 800 nm, emission pulse duration 100 fs) were employed to fabricate optoelectronic devices such as waveguides, micro-gratings and laser active centers in LiF crystals. F-2 color centers of about 2 x 10(18) cm(3) and refractive index change of about 1% at 633 nm were induced by the fs-laser irradiation. This technique was applied to fabricate a distributed-feedback (DFB) F-2 color center laser structure inside LiF single crystal. The LiF DFB laser exhibited laser oscillation at 707 nm at room temperature. The slope efficiency of similar to 10% and beam divergence of similar to 20 mrad were achieved.
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页数：9
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