Observation of O₂ inside voids formed in GeO₂ glass by tightly-focused fs-laser pulses
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Bressel, Lena; de Ligny, Dominique; Gamaly, Eugene G; Rode, Andrei V.; Juodkazis, Saulius
Description
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...[Show more]
Collections | ANU Research Publications |
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Date published: | 2011 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/102363 |
Source: | Optical Materials Express |
DOI: | 10.1364/OME.1.001150 |
Access Rights: | Open Access |
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