Type I quasi-phase-matched blue second harmonic generation with different polarizations in periodically poled LiNbO3

被引：14

作者：

Chen, YP ^{[1
]}

Wu, R ^{[1
]}

Zeng, XL ^{[1
]}

Xia, YX ^{[1
]}

Chen, XF ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Opt & Photon, Dept Phys, State Key Lab Fiber Opt Local Area Commun Network, Shanghai 200240, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2006年 / 38卷 / 01期

基金：

中国国家自然科学基金;

关键词：

quasi-phase matching; blue; polarization;

D O I：

10.1016/j.optlastec.2004.11.001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

First-order type I quasi-phase-matched (QPM) E-Y(omega) + E-Y(omega) -> E-Z(2 omega) blue second-harmonic generation was demonstrated in periodically poled LiNbO3 with period of 14.5 mu m using d(31). 52 mu J of harmonic blue light at 0.473 mu m was generated pumped by 114 mu J 35 ps pulse laser at 0.946 mu m at 150 degrees C with a conversion efficiency of 45.6%. The average conversion efficiencies of 41.3% and 19% were also obtained at 150 degrees C, respectively, in the conventional first- and third-order QPM E-Z(omega) + E-Z(omega) -> E-Z(2 omega) blue second-and harmonic generation at 0.473 mu m. The temperature acceptance bandwidths of 20 mm length periodically poled LiNbO3 with first-order grating periods of 14.5 and 4.5 mu m are 2.0 and 0.9 degrees C, respectively. The larger acceptance bandwidths and grating period for E-Y(omega) + E-Y(omega) -> E-Z(2 omega), than those for E-Z(omega) + E-Z(omega) -> E-Z(2 omega) enhance the frequency conversion efficiency, which shows the polarization dependence of quasi-phase matching. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：19 / 22

页数：4

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