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A polarised brightness-enhanced Nd:Y3Al5O12 planar waveguide laser
C.T.A.Brown, R.D.Harris, D.P.Shepherd, A.C.Tropper, J.S.Wilkinson
Optoelectronics Research Centre, University of Southampton
B. Ferrand
LETI (CEA-Technologies Avancées) Départment Optronique, Centre d'Etudes Nucléaires de Grenoble 85X-28041, Grenoble Cedex, France
Abstract
A simple method for the production of a polarised Nd:Y3Al5O12 on Y3Al5O12 planar waveguide laser is reported. A 50nm layer of Au deposited on the surface of an unclad, 8.3 μm thick core region has produced an improvement in the TE/TM polarisation extinction ratio from 7dB to 27dB. The M2 of the beam in the guided plane has been reduced from 1.53 ±0.04 in an uncoated region of the waveguide to 1.17 ±0.01 in the Au coated region using optimum pump launch conditions.
IEEE Photonics Technology Letters (1998) Vol.10(10) pp.1392-1394
doi: 10.1109/68.720271
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Copyright University of Southampton 2006