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Unambiguous evidence of two plasmon decay during ultrafast laser writing in glass

Unambiguous evidence of two plasmon decay during ultrafast laser writing in glass
Unambiguous evidence of two plasmon decay during ultrafast laser writing in glass
The interaction of femtosecond laser pulses with transparent media has been a focus of research due to its unique properties. It has been established that above a certain threshold, self-assembled nanogratings in silica glass can be induced [1]. Although the mechanism that triggers the nanostructure is still unclear, a theory has been introduced involving the mechanism of nanogratings formation based on two plasmon parametric decay [2]. A signature of two-plasmon decay is the generation of the 3/2 harmonic. Previously, in transparent media, only a weak 3ω/2 emission was observed at high energy thresholds [3]. Thus it remains unclear if two plasmon decay can be associated with self-assembled nanogratings formation. Here we present a thorough survey of 2nd, 3rd and 3/2 harmonic generations in fused silica for varying laser fluences within multiple regimes of optical laser writing and self-assembled nanostructures. We demonstrate that 3ω/2 can be observed at the energies close to the threshold of permanent material modification.
Patel, Aabid
19aacdf5-c01e-4122-94b6-a29c10485952
Gecevičius, Mindaugas
271576ee-dd9d-40b3-ab2f-19686b91dc64
Drevinskas, Rokas
23f858b5-8750-4113-ba11-49cfefc3dbb7
Beresna, M.
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Patel, Aabid
19aacdf5-c01e-4122-94b6-a29c10485952
Gecevičius, Mindaugas
271576ee-dd9d-40b3-ab2f-19686b91dc64
Drevinskas, Rokas
23f858b5-8750-4113-ba11-49cfefc3dbb7
Beresna, M.
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Patel, Aabid, Gecevičius, Mindaugas, Drevinskas, Rokas, Beresna, M. and Kazansky, P.G. (2013) Unambiguous evidence of two plasmon decay during ultrafast laser writing in glass. 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, Munich, Germany. 12 - 16 May 2013.

Record type: Conference or Workshop Item (Paper)

Abstract

The interaction of femtosecond laser pulses with transparent media has been a focus of research due to its unique properties. It has been established that above a certain threshold, self-assembled nanogratings in silica glass can be induced [1]. Although the mechanism that triggers the nanostructure is still unclear, a theory has been introduced involving the mechanism of nanogratings formation based on two plasmon parametric decay [2]. A signature of two-plasmon decay is the generation of the 3/2 harmonic. Previously, in transparent media, only a weak 3ω/2 emission was observed at high energy thresholds [3]. Thus it remains unclear if two plasmon decay can be associated with self-assembled nanogratings formation. Here we present a thorough survey of 2nd, 3rd and 3/2 harmonic generations in fused silica for varying laser fluences within multiple regimes of optical laser writing and self-assembled nanostructures. We demonstrate that 3ω/2 can be observed at the energies close to the threshold of permanent material modification.

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e-pub ahead of print date: 2013
Venue - Dates: 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, Munich, Germany, 2013-05-12 - 2013-05-16
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 364421
URI: http://eprints.soton.ac.uk/id/eprint/364421
PURE UUID: 79717f8f-cc8a-441b-9e5f-326487acc869
ORCID for Aabid Patel: ORCID iD orcid.org/0000-0001-9902-5192

Catalogue record

Date deposited: 29 Apr 2014 09:46
Last modified: 11 Jul 2019 16:31

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Contributors

Author: Aabid Patel ORCID iD
Author: Mindaugas Gecevičius
Author: Rokas Drevinskas
Author: M. Beresna
Author: P.G. Kazansky

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