Title :
A polarized brightness-enhanced Nd:Y3Al5O/sub l2/ planar waveguide laser
Author :
Brown, C.T.A. ; Harris, R.D. ; Shepherd, D.P. ; Tropper, A.C. ; Wilkinson, J.S. ; Ferrand, B.
Author_Institution :
Optoelectron. Res. Centre, Southampton Univ., UK
Abstract :
A simple method for the production of a polarized Nd:Y3Al50/sub 12/ on Y3Al5O/sub 12/ planar waveguide laser is reported. A 50-nm layer of Au deposited on the surface of an unclad, 8.3-μm thick core region has produced an improvement in the TE/TM polarization extinction ratio from 7 to 27 dB. The M2 of the beam in the guided plane has been reduced from 1.53/spl plusmn/0.01 in an uncoated region of the waveguide to 1.17/spl plusmn/0.01 in the Au-coated region using optimum pump launch conditions.
Keywords :
brightness; light polarisation; metallic thin films; neodymium; optical planar waveguides; optical pumping; solid lasers; waveguide lasers; 50 nm; 8.3 mum; Au; Au layer; Au-coated region; TE/TM polarization extinction ratio; Y/sub 3/Al/sub 5/O/sub 12/ planar waveguide laser; YAG:Nd; YAl5O12:Nd; guided plane; optimum pump launch conditions; polarized brightness-enhanced Nd:Y/sub 3/Al/sub 5/O/sub l2/ planar waveguide laser; thick core region; uncoated region; Electromagnetic waveguides; Laser beams; Laser excitation; Optical polarization; Planar waveguides; Plasmons; Propagation losses; Pump lasers; Tellurium; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
