Nonlinear spectrum broadening of femtosecond laser pulses in photorefractive waveguide arrays

被引：2
作者：
Wang, Zhe [1 ,2 ]
Wu, Qiang [1 ,2 ]
Yang, Chengliang [1 ,2 ]
Zhang, Xinzheng [1 ,2 ]
Chen, Zhigang [1 ,2 ,3 ]
Rupp, Romano A. [1 ,2 ]
Xu, Jingjun [1 ,2 ]
机构：
[1] Nankai Univ, Key Lab Weak Light Nonlinear Photon, Minist Educ, Sch Phys, Tianjin 300457, Peoples R China
[2] Nankai Univ, TEDA Appl Phys Sch, Tianjin 300457, Peoples R China
[3] San Francisco State Univ, Dept Phys & Astron, San Francisco, CA 94132 USA
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 10期
基金：
中国国家自然科学基金;
关键词：
DISCRETE SURFACE SOLITONS; SELF-PHASE-MODULATION; PHOTONIC LATTICES; LOCALIZATION; DIFFRACTION; LIGHT;
D O I：
10.1364/OE.18.010112
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In photorefractive waveguide arrays, the process and extent of spectral broadening of femtosecond laser pulse caused by self-phase modulation are studied theoretically and experimentally. The threshold of self-phase modulation is more than two times larger than the common threshold in a bulk sample, which affects the extent of spectral broadening dramatically. The coupling length and the ratio between the common threshold and the input peak intensity of the femtosecond laser pulse are the two key parameters dominating these phenomena. The experimental results confirm the theoretical expectation. (C)2010 Optical Society of America
引用
收藏
页码：10112 / 10119
页数：8
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