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Proceedings Paper

Low-threshold, mirrorless emission at 981 nm in an Yb,Gd,Lu:KYW inverted rib waveguide laser
Author(s): Amol Choudhary; Western Bolaños; Pradeesh Kannan; Joan J. Carvajal; Magdalena Aguilò; Francesc Diaz; David P. Shepherd
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Paper Abstract

In this work, we demonstrate 3-level laser operation in a Yb,Gd,Lu:KYW waveguide laser fabricated by combination of liquid phase epitaxy and Ar+ ion beam milling. Laser emission was observed at 981 nm with an absorbed threshold power of 23 mW and a slope efficiency of 58% without the use of any mirrors. With an HR/6%T cavity, the threshold was reduced to 13 mW. The output was single mode with beam radii of 4.8 μm and 3 μm in the in-plane and out-of-plane direction respectively. Laser emission was also observed at 999.8 nm with a threshold of 8 mW by using mirrors favouring the 999.8 nm transition and forming an HR/5%T cavity.

Paper Details

Date Published: 6 March 2013
PDF: 7 pages
Proc. SPIE 8599, Solid State Lasers XXII: Technology and Devices, 859905 (6 March 2013); doi: 10.1117/12.2001832
Show Author Affiliations
Amol Choudhary, Univ. of Southampton (United Kingdom)
Western Bolaños, Univ. Rovira i Virgili (Spain)
Pradeesh Kannan, Univ. of Southampton (United Kingdom)
Joan J. Carvajal, Univ. Rovira i Virgili (Spain)
Magdalena Aguilò, Univ. Rovira i Virgili (Spain)
Francesc Diaz, Univ. Rovira i Virgili (Spain)
David P. Shepherd, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 8599:
Solid State Lasers XXII: Technology and Devices
W. Andrew Clarkson; Ramesh Shori, Editor(s)

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