Effects of cryogenic temperatures on the performance of CW VECSELs

Oliver J. Morris; Keith G. Wilcox; C. R. Head; Andrew P. Turnbull; Ian Farrer; Harvey E. Beere; David A. Ritchie; Anne C. Tropper

doi:10.1117/12.2002368

Effects of cryogenic temperatures on the performance of CW VECSELs

Oliver J. Morris, Keith G. Wilcox, C. R. Head, Andrew P. Turnbull, Ian Farrer, Harvey E. Beere, David A. Ritchie, Anne C. Tropper

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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.

Original language	English
Title of host publication	Vertical External Cavity Surface Emitting Lasers (VECSELs) III
DOIs	https://doi.org/10.1117/12.2002368
Publication status	Published - 15 Apr 2013
Event	Vertical External Cavity Surface Emitting Lasers (VECSELs) III - San Francisco, CA, United States Duration: 3 Feb 2013 → 5 Feb 2013

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8606
ISSN (Print)	0277-786X

Conference

Conference	Vertical External Cavity Surface Emitting Lasers (VECSELs) III
Country/Territory	United States
City	San Francisco, CA
Period	3/02/13 → 5/02/13

Keywords

Cryogenic
OPSL
optically pumped
semiconductor disk laser
VECSEL

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2002368

Cite this

Morris, O. J., Wilcox, K. G., Head, C. R., Turnbull, A. P., Farrer, I., Beere, H. E., Ritchie, D. A., & Tropper, A. C. (2013). Effects of cryogenic temperatures on the performance of CW VECSELs. In Vertical External Cavity Surface Emitting Lasers (VECSELs) III Article 86060L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8606). https://doi.org/10.1117/12.2002368

@inproceedings{4332f59898f145a8b5ea6499dc757864,

title = "Effects of cryogenic temperatures on the performance of CW VECSELs",

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.",

keywords = "Cryogenic, OPSL, optically pumped, semiconductor disk laser, VECSEL",

author = "Morris, \{Oliver J.\} and Wilcox, \{Keith G.\} and Head, \{C. R.\} and Turnbull, \{Andrew P.\} and Ian Farrer and Beere, \{Harvey E.\} and Ritchie, \{David A.\} and Tropper, \{Anne C.\}",

year = "2013",

month = apr,

day = "15",

doi = "10.1117/12.2002368",

language = "English",

isbn = "9780819493750",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Vertical External Cavity Surface Emitting Lasers (VECSELs) III",

note = "Vertical External Cavity Surface Emitting Lasers (VECSELs) III ; Conference date: 03-02-2013 Through 05-02-2013",

}

Morris, OJ, Wilcox, KG, Head, CR, Turnbull, AP, Farrer, I, Beere, HE, Ritchie, DA & Tropper, AC 2013, Effects of cryogenic temperatures on the performance of CW VECSELs. in Vertical External Cavity Surface Emitting Lasers (VECSELs) III., 86060L, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8606, Vertical External Cavity Surface Emitting Lasers (VECSELs) III, San Francisco, CA, United States, 3/02/13. https://doi.org/10.1117/12.2002368

Effects of cryogenic temperatures on the performance of CW VECSELs. / Morris, Oliver J.; Wilcox, Keith G.; Head, C. R. et al.
Vertical External Cavity Surface Emitting Lasers (VECSELs) III. 2013. 86060L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8606).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Effects of cryogenic temperatures on the performance of CW VECSELs

AU - Morris, Oliver J.

AU - Wilcox, Keith G.

AU - Head, C. R.

AU - Turnbull, Andrew P.

AU - Farrer, Ian

AU - Beere, Harvey E.

AU - Ritchie, David A.

AU - Tropper, Anne C.

PY - 2013/4/15

Y1 - 2013/4/15

N2 - 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.

AB - 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.

KW - Cryogenic

KW - OPSL

KW - optically pumped

KW - semiconductor disk laser

KW - VECSEL

UR - https://www.scopus.com/pages/publications/84875999624

U2 - 10.1117/12.2002368

DO - 10.1117/12.2002368

M3 - Conference contribution

AN - SCOPUS:84875999624

SN - 9780819493750

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Vertical External Cavity Surface Emitting Lasers (VECSELs) III

T2 - Vertical External Cavity Surface Emitting Lasers (VECSELs) III

Y2 - 3 February 2013 through 5 February 2013

ER -

Effects of cryogenic temperatures on the performance of CW VECSELs

Abstract

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Keywords

ASJC Scopus subject areas

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Effects of cryogenic temperatures on the performance of CW VECSELs

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

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Tuneable Gigahertz Mode Spaced Frequency Combs (Fellowship)

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