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Ultrafast laser-induced birefringence in various porosity silica glasses: from fused silica to aerogel

Ultrafast laser-induced birefringence in various porosity silica glasses: from fused silica to aerogel
Ultrafast laser-induced birefringence in various porosity silica glasses: from fused silica to aerogel
We compare a femtosecond laser induced modification in silica matrices with three different degrees of porosity. In single pulse regime, the decrease of substrate density from fused silica to high-silica porous glass and to silica aerogel glass results in tenfold increase of laser affected region with the formation of a symmetric cavity surrounded by the compressed silica shell with pearl like structures. In multi-pulse regime, if the cavity produced by the first pulse is relatively large, the subsequent pulses do not cause further modifications. If not, the transition from void to the anisotropic structure with the optical axis oriented parallel to the incident polarization is observed. The maximum retardance value achieved in porous glass is twofold higher than in fused silica, and tenfold greater than in aerogel. The polarization sensitive structuring in porous glass by two pulses of ultrafast laser irradiation is demonstrated, as well as no observable stress is generated at any conditions.
1094-4087
8011-8021
Čerkauskaite, Aušra
7f5b1e7a-b9f9-41d2-ab4d-307a46605e43
Drevinskas, Rokas
edfc60c3-d75f-4ce5-ad22-9f027b7eeda1
Rybaltovskii,, Alexey O.
d35abaf7-6282-4210-8116-56608fc935ab
Kazansky, Peter
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Čerkauskaite, Aušra
7f5b1e7a-b9f9-41d2-ab4d-307a46605e43
Drevinskas, Rokas
edfc60c3-d75f-4ce5-ad22-9f027b7eeda1
Rybaltovskii,, Alexey O.
d35abaf7-6282-4210-8116-56608fc935ab
Kazansky, Peter
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Čerkauskaite, Aušra, Drevinskas, Rokas, Rybaltovskii,, Alexey O. and Kazansky, Peter (2017) Ultrafast laser-induced birefringence in various porosity silica glasses: from fused silica to aerogel. Optics Express, 25 (7), 8011-8021. (doi:10.1364/OE.25.008011).

Record type: Article

Abstract

We compare a femtosecond laser induced modification in silica matrices with three different degrees of porosity. In single pulse regime, the decrease of substrate density from fused silica to high-silica porous glass and to silica aerogel glass results in tenfold increase of laser affected region with the formation of a symmetric cavity surrounded by the compressed silica shell with pearl like structures. In multi-pulse regime, if the cavity produced by the first pulse is relatively large, the subsequent pulses do not cause further modifications. If not, the transition from void to the anisotropic structure with the optical axis oriented parallel to the incident polarization is observed. The maximum retardance value achieved in porous glass is twofold higher than in fused silica, and tenfold greater than in aerogel. The polarization sensitive structuring in porous glass by two pulses of ultrafast laser irradiation is demonstrated, as well as no observable stress is generated at any conditions.

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aero_04 03 2017_OE - Accepted Manuscript
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More information

Accepted/In Press date: 2 March 2017
e-pub ahead of print date: 29 March 2017
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 407586
URI: http://eprints.soton.ac.uk/id/eprint/407586
ISSN: 1094-4087
PURE UUID: e1f02384-0c8f-469d-beb0-23dc0f04f2cf
ORCID for Aušra Čerkauskaite: ORCID iD orcid.org/0000-0002-2476-7797

Catalogue record

Date deposited: 16 Apr 2017 16:58
Last modified: 06 Oct 2020 19:39

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