Femtosecond filamentation in chalcogenide glasses limited by two-photon absorption

Date

2010-09-01

Author

Blonskyi, Ivan
Kadan, Viktor
Shpotyuk, Oleh
Iovu, Mihail
Pavlov, Ihor

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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.

Subject Keywords

Femtosecond laser pulses, Kerr effect, Filaments, Chalcogenide glass, Self-focusing

URI

https://hdl.handle.net/11511/57746

Journal

OPTICAL MATERIALS

DOI

https://doi.org/10.1016/j.optmat.2010.07.006

Collections

Department of Physics, Article

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Citation Formats

I. Blonskyi, V. Kadan, O. Shpotyuk, M. Iovu, and I. Pavlov, “Femtosecond filamentation in chalcogenide glasses limited by two-photon absorption,” OPTICAL MATERIALS, pp. 1553–1557, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57746.