Saturated absorption and nonlinear refraction of silicate glasses doped with silver nanoparticles at 532 nm

被引:76
作者
Ganeev, RA
Ryasnyansky, AI
Stepanov, AL
Usmanov, T
机构
[1] NPO Akadempribor, Tashkent 700125, Uzbekistan
[2] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[3] Samarkand State Univ, Samarkand 703004, Uzbekistan
[4] Univ Paris 06, CNRS, F-75015 Paris, France
[5] Karl Franzens Univ Graz, Inst Expt Phys, A-8010 Graz, Austria
[6] Karl Franzens Univ Graz, Erwin Schrodinger Inst Nanoscale Res, A-8010 Graz, Austria
[7] Russian Acad Sci, Kazan Phys Tech Inst, Kazan 420029, Russia
关键词
nonlinear absorption; nonlinear refraction; silicate glass; silver nanoparticles;
D O I
10.1007/s11082-004-3392-x
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The nonlinear optical characteristics of silicate glasses doped with silver nanoparticles are investigated by Z-scan technique using second harmonic radiation of picosecond Nd: YAG laser ( lambda = 532 nm, tau = 55 ps). The real and imaginary parts of third-order nonlinear susceptibility of silver-contained glasses were measured. It was found that the sign of Imchi((3)) was negative due to saturated absorption and the sign of Rechi((3)) was changed from negative (self-defocusing) to positive (self-focusing) with growth of laser radiation intensity. The mechanisms responsible for saturated absorption and nonlinear refraction are discussed.
引用
收藏
页码:949 / 960
页数:12
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