The University of Southampton
University of Southampton Institutional Repository

Effects of cryogenic temperatures on the performance of CW VECSELs

Effects of cryogenic temperatures on the performance of CW VECSELs
Effects of cryogenic temperatures on the performance of CW VECSELs
We report the effects of cryogenic temperatures on the performance of two CW VECSELs. Firstly we make use of a liquid nitrogen cooled copper cold finger cryostat to house an entire VECSEL device within the vacuum space and report a 3.3 fold reduction in lasing threshold and a 3.6 times increase in the slope efficiency when the gain chip is held at 133 K compared to 293 K. Secondly we show that a VECSEL utilising an unprocessed gain chip and pumped with constant pump-spot size, exhibits thermal rollover at twice the incident pump power when held at 20 K and compared to operation at 293 K. This enhanced performance will motivate the development of processed gain chips that are robust against thermal contraction.
SPIE
Morris, O.J.
3eaa7999-7671-4a77-9a82-02944b34ecb2
Wilcox, K.G.
b7c8da76-3530-4cbf-aaec-ffa11c347230
Head, C.R.
a32d57ad-9449-4d10-9eb0-ce8c95a1c0e0
Turnbull, A.P.
f6cf30f9-1906-44ac-aecd-0e74b2a938c3
Farrer, I.
8e39904e-2255-4432-be5b-1b46c5b0dd9a
Beere, H.E.
21adf7b3-de6c-4b51-96ce-76c673e4dc31
Ritchie, D.A.
efa64786-3cb8-47f4-98d5-e8cce27bb1e7
Tropper, A.C.
f3505426-e0d5-4e91-aed3-aecdb44b393c
Hastie, Jennifer E.
Morris, O.J.
3eaa7999-7671-4a77-9a82-02944b34ecb2
Wilcox, K.G.
b7c8da76-3530-4cbf-aaec-ffa11c347230
Head, C.R.
a32d57ad-9449-4d10-9eb0-ce8c95a1c0e0
Turnbull, A.P.
f6cf30f9-1906-44ac-aecd-0e74b2a938c3
Farrer, I.
8e39904e-2255-4432-be5b-1b46c5b0dd9a
Beere, H.E.
21adf7b3-de6c-4b51-96ce-76c673e4dc31
Ritchie, D.A.
efa64786-3cb8-47f4-98d5-e8cce27bb1e7
Tropper, A.C.
f3505426-e0d5-4e91-aed3-aecdb44b393c
Hastie, Jennifer E.

Morris, O.J., Wilcox, K.G., Head, C.R., Turnbull, A.P., Farrer, I., Beere, H.E., Ritchie, D.A. and Tropper, A.C. (2013) Effects of cryogenic temperatures on the performance of CW VECSELs. Hastie, Jennifer E. (ed.) In Vertical External Cavity Surface Emitting Lasers (VECSELs) III. vol. 8606, SPIE.. (doi:10.1117/12.2002368).

Record type: Conference or Workshop Item (Paper)

Abstract

We report the effects of cryogenic temperatures on the performance of two CW VECSELs. Firstly we make use of a liquid nitrogen cooled copper cold finger cryostat to house an entire VECSEL device within the vacuum space and report a 3.3 fold reduction in lasing threshold and a 3.6 times increase in the slope efficiency when the gain chip is held at 133 K compared to 293 K. Secondly we show that a VECSEL utilising an unprocessed gain chip and pumped with constant pump-spot size, exhibits thermal rollover at twice the incident pump power when held at 20 K and compared to operation at 293 K. This enhanced performance will motivate the development of processed gain chips that are robust against thermal contraction.

This record has no associated files available for download.

More information

Published date: 18 February 2013
Venue - Dates: Conference on Vertical External Cavity Surface Emitting Lasers (VECSELs) III, , San Francisco, United States, 2013-02-03 - 2013-02-05

Identifiers

Local EPrints ID: 443643
URI: http://eprints.soton.ac.uk/id/eprint/443643
PURE UUID: 07a50a0d-c3a7-472b-bfb7-36a96fc934eb

Catalogue record

Date deposited: 07 Sep 2020 16:30
Last modified: 16 Mar 2024 09:14

Export record

Altmetrics

Contributors

Author: O.J. Morris
Author: K.G. Wilcox
Author: C.R. Head
Author: A.P. Turnbull
Author: I. Farrer
Author: H.E. Beere
Author: D.A. Ritchie
Author: A.C. Tropper
Editor: Jennifer E. Hastie

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

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.

×