The University of Southampton
×
Filter your search:
University of Southampton Institutional Repository

High average power second harmonic generation in air

High average power second harmonic generation in air
High average power second harmonic generation in air
We demonstrate second harmonic vortex generation in atmospheric pressure air using tightly focused femtosecond laser beam. The circularly polarized ring-shaped beam of the second harmonic is generated in the air by fundamental beam of the same circular polarization, while the linear polarized beam produces two-lobe beam at the second harmonic frequency. The achieved normalized conversion efficiency and average second harmonic power are two orders of magnitude higher compared to those previously reported and can be increased up to 20 times by external gas flow. We demonstrate that the frequency doubling originates from the gradient of photoexcited free electrons created by pondermotive force.
0003-6951
121502
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Svirko, Yuri
beb25cef-3c46-498d-974f-bba4929f0b6a
Barkauskas, Martynas
dccb3452-a09e-4384-84ba-5d26ca289132
Danielius, Romas
83ca3d11-54ae-44bb-b028-c98389b37b68
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Svirko, Yuri
beb25cef-3c46-498d-974f-bba4929f0b6a
Barkauskas, Martynas
dccb3452-a09e-4384-84ba-5d26ca289132
Danielius, Romas
83ca3d11-54ae-44bb-b028-c98389b37b68

Beresna, Martynas, Kazansky, Peter G., Svirko, Yuri, Barkauskas, Martynas and Danielius, Romas (2009) High average power second harmonic generation in air. Applied Physics Letters, 95, 121502. (doi:10.1063/1.3232235).

Record type: Article

Abstract

We demonstrate second harmonic vortex generation in atmospheric pressure air using tightly focused femtosecond laser beam. The circularly polarized ring-shaped beam of the second harmonic is generated in the air by fundamental beam of the same circular polarization, while the linear polarized beam produces two-lobe beam at the second harmonic frequency. The achieved normalized conversion efficiency and average second harmonic power are two orders of magnitude higher compared to those previously reported and can be increased up to 20 times by external gas flow. We demonstrate that the frequency doubling originates from the gradient of photoexcited free electrons created by pondermotive force.

Text
a.pdf - Version of Record
Restricted to Repository staff only
Request a copy

More information

Published date: 21 September 2009
Learn more about Optoelectronics Research Centre research

Identifiers

Local EPrints ID: 78871
URI: http://eprints.soton.ac.uk/id/eprint/78871
DOI: doi:10.1063/1.3232235
ISSN: 0003-6951
PURE UUID: 71391e5f-e26b-4f23-8e64-690c4c88be8c

Catalogue record

Date deposited: 15 Mar 2010
Last modified: 14 Mar 2024 00:24

Export record

Altmetrics

Contributors

Author: Martynas Beresna
Author: Peter G. Kazansky
Author: Yuri Svirko
Author: Martynas Barkauskas
Author: Romas Danielius

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Library staff additional information
Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×