Title :
Design optimization of ARROW-type diode lasers
Author :
Mawst, L.J. ; Botez, D. ; Zmudzinski, C. ; Tu, C.
Author_Institution :
TRW Space & Technol. Group, Redondo Beach, CA, USA
Abstract :
Antiresonant reflecting optical wavelength (ARROW)-type diode lasers have been optimized for high-power, single-spatial-mode operation. Calculated modal behavior predicts strong intermodal discrimination with low loss for the fundamental ARROW mode. Single-lobe far-field operation is obtained only when the high-index reflecting (antiresonant) cladding layers correspond to an optical thickness of lambda /sub 1/ (m+3/4), where lambda is the lateral (projected) wavelength of the leaky wave in the high-index layers, and m is an integer (m=0, 1,. . .). Experimental results include stable, single-spatial mode operation to 500-mW peak pulsed power and 300-mW CW power at an emission wavelength of 0.98 mu m.<>
Keywords :
laser modes; optical losses; optical waveguides; reflectivity; refractive index; semiconductor lasers; 0.98 micron; 300 mW; 500 mW; ARROW-type diode lasers; CW power; IR; LD design optimisation; antiresonant cladding layers; antiresonant reflecting optical waveguide LDs; emission wavelength; fundamental ARROW mode; high-index layers; high-index reflecting; high-power; leaky wave; low loss; optical thickness; peak pulsed power; single-lobe far-field operation; single-spatial-mode operation; strong intermodal discrimination; Design optimization; Diode lasers; Fiber lasers; Laser modes; Laser stability; Optical harmonic generation; Optical pumping; Optical waveguides; Pulse amplifiers; Synthetic aperture sonar;
Journal_Title :
Photonics Technology Letters, IEEE
