Title :
Low-threshold laser in a high-index-contrast double tungstate waveguide
Author :
Geskus, D. ; Aravazhi, S. ; Wörhoff, K. ; Pollnau, M.
Author_Institution :
Integrated Opt. Microsyst. (IOMS) Group, Univ. of Twente, Enschede, Netherlands
Abstract :
The paper reports the laser emission from an enhanced-index-contrast KYW waveguide fabricated by co-doping the active layer with Lu and Gd ions. Both, Lu3+ and Gd3+ possess higher electron densities than Y3+, thus increasing the refractive index. The emission wavelength varied from 1010 nm to 1040 nm, strongly depending on the alignment, which was probably caused by the etalon effects of the gaps between the mirrors and the endfaces.
Keywords :
electron density; gadolinium; lutetium; optical waveguides; potassium compounds; refractive index; solid lasers; waveguide lasers; yttrium compounds; KY(WO4)2:Lu,Gd; codoping; electron densities; emission wavelength; enhanced-index-contrast waveguide; etalon effects; high-index-contrast double tungstate waveguide; laser emission; low-threshold laser; mirrors; refractive index; wavelength 1010 nm to 1040 nm; Laser excitation; Laser modes; Mirrors; Optical pumping; Optical refraction; Optical waveguides; Planar waveguides; Power lasers; Pump lasers; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5196490
