Random quasi-phase-matched second-harmonic generation in periodically poled lithium tantalate

被引：27
|
作者：
Stivala, S. [2 ]
Busacca, A. C. [2 ]
Pasquazi, A. [1 ]
Oliveri, R. L. [3 ]
Morandotti, R. [1 ]
Assanto, G. [4 ]
机构：
[1] Univ Quebec, Ultrafast Opt Proc Grp, INRS EMT, Varennes, PQ J3X 1S2, Canada
[2] Univ Palermo, DIEET, I-90128 Palermo, Italy
[3] Univ Palermo, DIFTER, I-90128 Palermo, Italy
[4] Univ Roma Tre, CNISM, NooEL Nonlinear Opt & OptoElect Lab, I-00146 Rome, Italy
来源：
OPTICS LETTERS | 2010年 / 35卷 / 03期
基金：
加拿大自然科学与工程研究理事会;
关键词：
NONLINEAR DIFFRACTION; CRYSTALS; DOMAINS;
D O I：
10.1364/OL.35.000363
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We observe second harmonic generation via random quasi-phase-matching in a 2.0 mu m periodically poled, 1-cm-long, z-cut lithium tantalate. Away from resonance, the harmonic output profiles exhibit a characteristic pattern stemming from a stochastic domain distribution and a quadratic growth with the fundamental excitation, as well as a broadband spectral response. The results are in good agreement with a simple model and numerical simulations in the undepleted regime, assuming an anisotropic spread of the random nonlinear component. (C) 2010 Optical Society of America
引用
收藏
页码：363 / 365
页数：3
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