Widely phase-matched tunable difference-frequency generation in periodically poled LiNbO3 crystal

被引：8

作者：

Deng, L. H. ^{[1
]}

Gao, X. M. ^{[1
]}

Cao, Z. S. ^{[1
]}

Chen, W. D. ^{[2
]}

Yuan, Y. Q. ^{[1
]}

Zhang, W. J. ^{[1
]}

Gonga, Z. B. ^{[1
]}

机构：

[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China

[2] Univ Littoral Cote dOpale, Physicochim Atmosphere Lab, F-59140 Dunkerque, France

来源：

OPTICS COMMUNICATIONS | 2008年 / 281卷 / 06期

关键词：

difference-frequency generation; periodically poled LiNbO3; atmospheric carbon dioxide;

D O I：

10.1016/j.optcom.2007.11.058

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the development of a laser source in the mid-infrared spectral region based on difference-frequency generation (DFG) in a periodically poled LiNbO3 (PPLN) crystal. Continuously tunable coherent radiation from 2.75 to 4.78 mu m was produced by optical parametric interaction between a diode-pumped monolithic continuous-wave (CW) Nd:YAG laser operating at 1.064 mu m and a CW Ti:Sapphire laser tunable from 767 to 871 nm. Temperature-dependent quasi-phase-matched DFG wavelength acceptance bandwidth was studied and characterized. An empiric formula is given to estimate the phase-matched wavelength acceptance bandwidth as a function of the crystal temperature at Lambda = 22.5 mu m. A large frequency scan of 128 cm(-1) (about 78 cm(-1) above 1 mu W) near 4.2 mu m was achieved. The whole absorption spectrum of the P and R branches of the nu(3) band of atmospheric carbon dioxide has been recorded with a single phase-matched frequency scan. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1686 / 1692

页数：7

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