Control of Thermal Lensing Effect in Transparent Liquids by Femtosecond Laser Pulses

被引：7

作者：

Li, Yi-Ci ^{[1
]}

Kuo, Sou-Zi ^{[1
]}

Wei, Tai-Huei ^{[1
]}

Wang, Jian-Neng ^{[2
]}

Yang, Sidney S. ^{[3
]}

Tang, Jaw-Luen ^{[1
]}

机构：

[1] Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan

[2] Natl Yunlin Univ Sci & Technol, Dept Construct Engn, Touliu 640, Taiwan

[3] Natl Tsing Hua Univ, Inst Photon Technol, Hsinchu 300, Taiwan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2009年 / 48卷 / 09期

关键词：

Z-SCAN; OPTICAL NONLINEARITIES; REFRACTIVE-INDEX; ABSORPTION; 3RD-ORDER; 2-PHOTON;

D O I：

10.1143/JJAP.48.09LF06

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The thermal lensing effect in transparent (linear and nonlinear) molecular liquids can be modulated by disrupting continuously output 82 MHz 28 fs laser pulses at 800 nm to form trains of various widths (tau(t)) with respect to the thermal diffusivity time tau(th) (similar to 2 ms). We present nonlinear refraction results for CHBr3 (bromoform) obtained by the Z-scan technique. The results show that the thermal lensing effect increases with tau(t) when tau(t) is less than tau(th), but becomes steady when tau(t) exceeds tau(th) and reaches 30 ms. The proposed technique of modulating the thermal lensing effect by varying tau(t) has great application potential in information photonics and optoelectronic devices, such as variable optical attenuators, holographic recording media, optical limiters and optical switches. (C) 2009 The Japan Society of Applied Physics

引用

页码：09LF061 / 09LF064

页数：4

共 22 条

[1] Density, viscosity, refractive index, and speed of sound in binary mixtures of ethenylbenzene with N,N-dimethylacetamide, tetrahydrofuran, N,N-dimethylformamide, 1,4-dioxane, dimethyl sulfoxide, chloroform, bromoform, and 1-chloronaphthalene in the temperature interval (298.15-308.15) K [J].