Nonlinear optical characteristics of BSO and BGO photorefractive crystals in visible and infrared ranges

被引：32

作者：

Ganeev, RA ^{[1
]}

Ryasnyansky, AI

Tugushev, RI

Kodirov, MK

Akhmedjanov, FR

Usmanov, T

机构：

[1] NPO Akadempribor, Tashkent 700125, Uzbekistan

[2] Samarkand State Univ, Samarkand 703004, Uzbekistan

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2004年 / 36卷 / 09期

关键词：

nonlinear absorption; nonlinear refraction; photorefractive crystals; Z-scan;

D O I：

10.1023/B:OQEL.0000040048.60981.cd

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：

Nonlinear refraction, nonlinear absorption and optical limiting in photorefractive crystals Bi12SiO20 (BSO) and Bi12GeO20 (BGO) at the wavelengths of 1064 and 532 nm were investigated. It was shown that both BSO and BGO crystals possess by positive nonlinear refraction in two investigated spectral ranges (n(2)(BSO)=(2.5 +/- 0.5) x 10(-12) esu, n(2)(BGO) = (6.3 +/- 1.3) x 10(-12) esu at lambda = 1064 nm; n(2)(BSO) = (4.4 +/- 0.9) x 10(-12) esu, n(2)(BGO) = (7.4 +/- 1.5) x 10(-12) esu at lambda = 532 nm). The nonlinear absorption was due to three-photon absorption at the wavelength of 1064 nm (beta(BSO)((3omega)) = (2.5 +/- 0.8) x 10(-20) cm(3) W-2, beta(BGO)((3omega)) = (4.4 +/- 1.3) x 10(-20) cm(3) W-2) and two-photon absorption at the wavelength of 532 nm (beta(BSO)((2omega)) = ( 2 +/- 0.4) x 10(-9) cm W-1, beta(BGO)((2omega)) = (3.7 +/- 0.7) x 10(-9) cm W-1).

引用

页码：807 / 818

页数：12

共 20 条

[1] GENERATION OF EXTENDED PULSE TRAINS OF MINIMUM DURATION BY PASSIVE NEGATIVE FEEDBACK APPLIED TO SOLID-STATE Q-SWITCHED LASERS [J].