Title :
Tunable grating coupled surface-emitting tapered laser
Author :
Luo, H. ; Bedford, R. ; Penner, S. ; Fallahi, M.
Author_Institution :
Opt. Sci. Center, Arizona Univ., Tucson, AZ, USA
Abstract :
We report on the design and fabrication of a wavelength-tunable grating coupled surface-emitting laser. A curved second-order grating is used at the end of a tapered gain section to provide feedback as well as collimated surface out-coupling. Wavelength tuning is achieved by current injection into the grating section through a film of indium-tin oxide deposited on the grating surface. Low divergence single-frequency surface emission with /spl sim/1-nm wavelength tuning is demonstrated.
Keywords :
diffraction gratings; laser beams; laser feedback; laser modes; laser tuning; optical couplers; optical fabrication; ridge waveguides; semiconductor lasers; surface emitting lasers; waveguide lasers; ITO; InSnO; collimated surface out-coupling; current injection; curved second-order grating; design; fabrication; feedback; grating section; grating surface; low divergence single-frequency surface emission; tapered gain section; tunable grating coupled surface-emitting tapered laser; wavelength tuning; wavelength-tunable grating coupled surface-emitting laser; Collimators; Gratings; Laser feedback; Laser tuning; Optical coupling; Optical design; Optical device fabrication; Surface emitting lasers; Surface waves; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
