Narrow-linewidth surface-emitting distributed feedback laser emitting from P-surface

Abstract

In order to obtain semiconductor lasers with narrow linewidth and low far-field divergence angle semiconductor lasers, a surface emitting distributed feedback (SE-DFB) semiconductor laser emitting from P-surface is researched theoretically and experimentally in this paper. The device is obtained with wavelength of 976.2 nm, linewidth of 0.94 nm, far-field divergence angle of 2.6∘×6.1∘. Meanwhile the device is simple to fabricate and easy to integrate. The research proposes a novel method for obtaining narrow linewidth SE-DFB semiconductor lasers.