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Proceedings Paper

VECSELs emitting at 976nm designed for second harmonic generation in the blue wavelength region
Author(s): Jan Muszalski; Artur Broda; Agata Jasik; Anna Wójcik-Jedlińska; Artur Trajnerowicz; Justyna Kubacka-Traczyk; Iwona Sankowskaa
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Paper Abstract

Using a Vertical Cavity Surface Emitting Laser (VECSEL) “as-grown” heterostructure we set-up a laser emitting at 488 nm with the output power approaching 20mW. The short wavelength emission was due to the conversion of the 976nm emission by a second harmonic generation process in a type-I lithum triborate (LBO). The V-type external cavity permitted efficient focusing of the laser beam on both the VECSEL heterostructure and the non linear crystal. A small diameter focused spot on the gain mirror is required when “as-grown” heterostructures are used. No birefringent filter was used in the resonator. In the case of our heterostructure we observed that the light was spontaneously polarized along the one of the crystallographic direction. The polarization ratio was 1000:1. The VECSEL heterostructure was of the resonant type strongly enhancing a single wavelength emission. The wavelength fine tuning was performed by heatsink temperature adjustment. The heterostructure was grown by molecular beam epitaxy. It consisted of 12 InGaAs quantum wells enclosed by GaAs barriers and a AlAs/GaAs DBR.

Paper Details

Date Published: 22 January 2013
PDF: 7 pages
Proc. SPIE 8702, Laser Technology 2012: Progress in Lasers, 87020A (22 January 2013); doi: 10.1117/12.2014757
Show Author Affiliations
Jan Muszalski, Institute of Electron Technology (Poland)
Artur Broda, Wydział Fizyki Politechnika Warszawska (Poland)
Agata Jasik, Institute of Electron Technology (Poland)
Anna Wójcik-Jedlińska, Institute of Electron Technology (Poland)
Artur Trajnerowicz, Institute of Electron Technology (Poland)
Justyna Kubacka-Traczyk, Institute of Electron Technology (Poland)
Iwona Sankowskaa , Institute of Electron Technology (Poland)

Published in SPIE Proceedings Vol. 8702:
Laser Technology 2012: Progress in Lasers
Wieslaw L Wolinski; Zdzislaw Jankiewicz; Ryszard S. Romaniuk, Editor(s)

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