Title :
Double Tungstate Lasers: From Bulk Toward On-Chip Integrated Waveguide Devices
Author :
Pollnau, Markus ; Romanyuk, Yaroslav E. ; Gardillou, Florent ; Borca, Camelia N. ; Griebner, Uwe ; Rivier, Simon ; Petrov, Valentin
Author_Institution :
Univ. of Twente, Enschede
Abstract :
It has been recognized that the monoclinic double tungstates KY(WO4)2, KGd(WO4)2, and KLu(WO4)2 possess a high potential as rare-earth-ion-doped solid-state laser materials, partly due to the high absorption and emission cross sections of rare-earth ions when doped into these materials. Besides, their high refractive indexes make these materials potentially suitable for applications that require optical gain and high power in integrated optics, with rather high integration density. We review the recent advances in the field of bulk lasers in these materials and present our work toward the demonstration of waveguide lasers and their integration with other optical structures on a chip.
Keywords :
gadolinium compounds; integrated optics; lutetium compounds; potassium compounds; refractive index; solid lasers; waveguide lasers; yttrium compounds; KGd(WO4)2 - System; KLu(WO4)2 - System; KY(WO4)2 - System; bulk lasers; bulk waveguide devices; double tungstate lasers; emission cross sections; integrated optics; integration density; monoclinic double tungstates; on-chip integrated waveguide devices; optical absorption; optical gain; optical structures; rare-earth-ion-doped laser materials; refractive indexes; solid-state laser materials; waveguide lasers; Absorption; Integrated optics; Optical materials; Optical refraction; Optical variables control; Optical waveguides; Particle beam optics; Refractive index; Solid lasers; Waveguide lasers; CW lasers; dielectric materials; dielectric waveguides; epitaxial layers; integrated optics; ion implantation; optical planar waveguides; optical strip waveguides; optical waveguides; pulsed lasers; rare earth compounds; solid lasers; thulium compounds; tungsten compounds; ytterbium compounds;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2007.896094
