Type-I walk-off compensated second and fourth harmonic generation of Nd:YAG laser radiation from a Li2B4O7 crystal

被引：4
|
作者：
Bhar, GC [1 ]
Chaudhary, AK
Kumbhakar, P
Rudra, AM
机构：
[1] Univ Burdwan, Dept Phys, Laser Lab, Burdwan 713104, W Bengal, India
[2] Reg Engn Coll, Dept Phys, Durgapur 713209, India
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2001年 / 34卷 / 03期
关键词：
D O I：
10.1088/0022-3727/34/3/319
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A type-I walk-off compensation (WOC) arrangement has been made for the second harmonic generation (SHG) and the fourth harmonic generation (FOHG) of commercially available e-switched Nd:YAG laser radiation, for the first time, using two identically cut Li2B4O7 crystals. The enhancement of the conversion efficiencies has been realized in the WOC arrangement by a factor of 2.71 for the SHG and 2.65 for the FOHG relative to the double-crystal non-walk-off arrangement. The absolute values of the conversion efficiencies obtained for WOC SHG and FOHG are 3.52% and 3.56% respectively, applying input power densities for the fundamental and second harmonic of the Nd:YAG laser beam at only 28.3 MW cm(-2) and 11.7 MW cm(-2), respectively.
引用
收藏
页码：360 / 363
页数：4
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