High-Power 980-nm Broad-Area Lasers Spectrally Stabilized by Surface Bragg Gratings

Published in:
IEEE Photonics Technol. Lett., vol. 22, no. 5, pp. 284-286 (2010).
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Abstract:
We report on broad-area distributed Bragg reflector (DBR) lasers with a stripe width of 90 µm providing up to 14-W optical power and 50% maximum conversion efficiency. Ninety-five percent of the power is included within a wavelength range of less than 1 nm. The wavelength shift between threshold and the maximum output power is less than 3.5 nm. The wavelength stabilization is achieved with a 500-µm-long DBR containing a sixth-order Bragg grating defined by i-line wafer stepper lithography and fabricated by reactive ion etching.

Index Terms:
Bragg grating, high power, laser fabrication, semiconductor laser, wavelength stabilization.

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