CO2 laser induced two-photon absorption detected by near-infrared lasers in As2Se2S glasses

被引：7

作者：

Gruhn, Wojciech ^{[1
]}

机构：

[1] Jan Dlugosz Univ Czestochowa, Inst Phys, PL-42200 Czestochowa, Poland

来源：

OPTICA APPLICATA | 2012年 / 42卷 / 03期

关键词：

nonlinear optics; infrared glasses; 2ND-HARMONIC GENERATION; RED LUMINESCENCE; IR;

D O I：

10.5277/oa120303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Influence of CO2 pulsed microsecond laser on two-photon absorption (TPA) at wavelengths of Nd:YAG (1060 nm and 1320 nm) and Er glass lasers (1540 nm) for As2Se2S glasses was studied. Dependence of the TPA versus the photoinducing power densities at wavelength 9.2 mu m is studied. The highest values of the TPA beta coefficient were achieved for perpendicular polarizations between the pumping and probing laser beams. The obtained values of TPA coefficients indicate a possibility of using the As2Se2S glasses as optically-operated IR laser limiters in a wide spectral range. The substantial role of anharmonic electron-phonon subsystem is demonstrated.

引用

页码：467 / 472

页数：6

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