Change of optimum conditions of second harmonic generation of spatial limited laser beams in nonlinear crystals

被引:1
|
作者
Sapaev, UK [1 ]
Kulagin, IA [1 ]
Usmanov, T [1 ]
机构
[1] Ukbek Acad Sci, NPO Akadempribor, Laser Matter Interact Lab, Tashkent 700125, Uzbekistan
关键词
KDP crystal; nonlinear crystals; second harmonic generation; spatial limited laser beams; walk-off angle;
D O I
10.1023/B:OQEL.0000009398.70142.bc
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Frequency doubling of spatially limited laser beams in nonlinear crystals is investigated theoretically. It was shown that the major factor, which reduces the second harmonic generation (SHG) efficiency in this case, is a diaphragm aperture effect, caused by influence of extraordinary polarized laser beams. In that case a spatial shift of mutually orthogonally polarized beams of the incident waves relative to each other in perpendicular direction of wave transmission at the entry to crystals lead to increase the efficiency of SHG of limited beams.
引用
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页码:1311 / 1315
页数:5
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