Femtosecond filamentation in chalcogenide glasses limited by two-photon absorption

被引：29

作者：

Blonskyi, Ivan ^{[1
]}

Kadan, Viktor ^{[1
]}

Shpotyuk, Oleh ^{[2
,3
]}

Iovu, Mihail ^{[4
]}

Pavlov, Ihor ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Phys, Dept Photon Proc, UA-03680 Kiev, Ukraine

[2] Sci Res Co Carat, Lviv Sci Res Inst Mat, UA-79031 Lvov, Ukraine

[3] Jan Dlugosz Univ, Inst Phys, PL-42201 Czestochowa, Poland

[4] Moldavian Acad Sci, Inst Appl Phys, Ctr Optoelect, MD-2028 Kishinev, Moldova

来源：

OPTICAL MATERIALS | 2010年 / 32卷 / 11期

关键词：

Femtosecond laser pulses; Kerr effect; Filaments; Chalcogenide glass; Self-focusing; FUSED-SILICA; STRUCTURAL MODIFICATIONS; LASER FILAMENTS; AS2S3; GLASS; PULSES; NONLINEARITIES; SEMICONDUCTORS; MEDIA; BEAM; BULK;

D O I：

10.1016/j.optmat.2010.07.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Filamentation of 800 nm femtosecond laser pulses in the conditions of strong two-photon absorption was first directly observed in As4Ge30S66 chalcogenide glass, this effect being accompanied by increase in the pulse spectrum width from 8.5 to 11 nm and its modulation indicating the pulse temporal splitting. In contrast, there was no filamentation and pulse spectrum widening in stoichiometric As2S3 glass. The nonlinear figure of merit was shown to be as high as 0.5 and only similar to 0.1 in glassy As4Ge30S66 and As2S3, respectively. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1553 / 1557

页数：5

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