Observation of O2 inside voids formed in Geo2 glass by tightly-focused fs-laser pulses

Lena Bressel; Dominique de Ligny; Eugene G. Gamaly; Andrei V. Rode; Saulius Juodkazis

doi:10.1364/OME.1.001150

Observation of O₂ inside voids formed in Geo₂ glass by tightly-focused fs-laser pulses

Lena Bressel, Dominique de Ligny, Eugene G. Gamaly, Andrei V. Rode, Saulius Juodkazis^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Unusual generation of molecular oxygen confined in a void inside the bulk of GeO₂ glass is observed with the Raman spectroscopy. The voids are formed by single tightly-focussed femtosecond laser pulses, converting a host glass material into a high temperature plasma, which explodes creating a void and inducing unexpected phase transformations. The intensity of the 1556 cm^-1 Raman line, that is a signature of molecular oxygen, increases with pulse energy. The mechanism of O₂ formation and material synthesis in plasma is presented and its relevance to fundamental problems of matter at high-pressure and temperature conditions and subject to geo-physical sciences is discussed.

Original language	English
Pages (from-to)	1150-1158
Number of pages	9
Journal	Optical Materials Express
Volume	1
Issue number	6
DOIs	https://doi.org/10.1364/OME.1.001150
Publication status	Published - 1 Oct 2011

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abstract = "Unusual generation of molecular oxygen confined in a void inside the bulk of GeO2 glass is observed with the Raman spectroscopy. The voids are formed by single tightly-focussed femtosecond laser pulses, converting a host glass material into a high temperature plasma, which explodes creating a void and inducing unexpected phase transformations. The intensity of the 1556 cm-1 Raman line, that is a signature of molecular oxygen, increases with pulse energy. The mechanism of O2 formation and material synthesis in plasma is presented and its relevance to fundamental problems of matter at high-pressure and temperature conditions and subject to geo-physical sciences is discussed.",

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AU - de Ligny, Dominique

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AU - Rode, Andrei V.

AU - Juodkazis, Saulius

PY - 2011/10/1

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AB - Unusual generation of molecular oxygen confined in a void inside the bulk of GeO2 glass is observed with the Raman spectroscopy. The voids are formed by single tightly-focussed femtosecond laser pulses, converting a host glass material into a high temperature plasma, which explodes creating a void and inducing unexpected phase transformations. The intensity of the 1556 cm-1 Raman line, that is a signature of molecular oxygen, increases with pulse energy. The mechanism of O2 formation and material synthesis in plasma is presented and its relevance to fundamental problems of matter at high-pressure and temperature conditions and subject to geo-physical sciences is discussed.

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JF - Optical Materials Express

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Observation of O₂ inside voids formed in Geo₂ glass by tightly-focused fs-laser pulses

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