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Study of dielectric coatings for broadband operation of surface-emitting semiconductor lasers

Study of dielectric coatings for broadband operation of surface-emitting semiconductor lasers
Study of dielectric coatings for broadband operation of surface-emitting semiconductor lasers

We investigate antireflection (AR) coating materials for two different operation lasing regimes requiring broad spectral bandwidth. We characterize high-power continuous-wave (CW) wavelength-tunable vertical-external-cavity surface-emitting semiconductor lasers and their passive mode-locking capabilities when using semiconductor saturable absorber mirrors. One laser gain design was investigated with different single dielectric layers as AR coatings. The dielectric coating materials used were SiO2 , Al2O3 , Ta2O5 , and TiO2 . The AR coating was designed to reduce pump reflection and increase the confinement factor of the microcavity. Average power of 4.6 W in CW and a total wavelength tuning range of 42 nm has been observed with the SiO2 -coated structure. The shortest pulse of 708 fs was also observed for the SiO2 -coated structure, with a corresponding CW wavelength tuning range of 36 nm.

0740-3224
752-756
Robin Head, C.
a32d57ad-9449-4d10-9eb0-ce8c95a1c0e0
Chen Sverre, T.
f515a9e9-da44-4af8-b444-8e1daa93222d
Woods, Jonathan
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Hein, Alexander
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Polanik, Markus
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Turnbull, Andrew P.
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Shaw, Edward A.
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Unger, Peter
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Tropper, Anne C.
f3505426-e0d5-4e91-aed3-aecdb44b393c
Apostolopoulos, Vasilis
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Robin Head, C.
a32d57ad-9449-4d10-9eb0-ce8c95a1c0e0
Chen Sverre, T.
f515a9e9-da44-4af8-b444-8e1daa93222d
Woods, Jonathan
469cd675-1074-4b44-a0d4-b72a4915fa36
Hein, Alexander
2a8afbde-c44f-40f1-b906-9e817b5f14aa
Polanik, Markus
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Turnbull, Andrew P.
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Shaw, Edward A.
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Unger, Peter
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Tropper, Anne C.
f3505426-e0d5-4e91-aed3-aecdb44b393c
Apostolopoulos, Vasilis
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Robin Head, C., Chen Sverre, T., Woods, Jonathan, Hein, Alexander, Polanik, Markus, Turnbull, Andrew P., Shaw, Edward A., Unger, Peter, Tropper, Anne C. and Apostolopoulos, Vasilis (2019) Study of dielectric coatings for broadband operation of surface-emitting semiconductor lasers. Journal of the Optical Society of America B, 36 (3), 752-756. (doi:10.1364/JOSAB.36.000752).

Record type: Article

Abstract

We investigate antireflection (AR) coating materials for two different operation lasing regimes requiring broad spectral bandwidth. We characterize high-power continuous-wave (CW) wavelength-tunable vertical-external-cavity surface-emitting semiconductor lasers and their passive mode-locking capabilities when using semiconductor saturable absorber mirrors. One laser gain design was investigated with different single dielectric layers as AR coatings. The dielectric coating materials used were SiO2 , Al2O3 , Ta2O5 , and TiO2 . The AR coating was designed to reduce pump reflection and increase the confinement factor of the microcavity. Average power of 4.6 W in CW and a total wavelength tuning range of 42 nm has been observed with the SiO2 -coated structure. The shortest pulse of 708 fs was also observed for the SiO2 -coated structure, with a corresponding CW wavelength tuning range of 36 nm.

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More information

Accepted/In Press date: 12 January 2019
e-pub ahead of print date: 15 January 2019

Identifiers

Local EPrints ID: 429051
URI: https://eprints.soton.ac.uk/id/eprint/429051
ISSN: 0740-3224
PURE UUID: 11a0ecab-e7a1-41b9-acef-e5049e09c876
ORCID for Vasilis Apostolopoulos: ORCID iD orcid.org/0000-0003-3733-2191

Catalogue record

Date deposited: 20 Mar 2019 17:30
Last modified: 20 Jul 2019 00:51

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Contributors

Author: C. Robin Head
Author: T. Chen Sverre
Author: Jonathan Woods
Author: Alexander Hein
Author: Markus Polanik
Author: Andrew P. Turnbull
Author: Edward A. Shaw
Author: Peter Unger
Author: Anne C. Tropper

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