Visible GaAlAs V-channeled substrate inner stripe laser with stabilized mode using <i>p</i>-GaAs substrate

Abstract

A new visible laser, the V channeled substrate inner stripe laser, is developed. This laser can internally confine the current into the V-channel by using a thin n-GaAs layer grown on the p-GaAs substrate. cw threshold currents were 35–45 mA in the visible spectral range of 770–790 nm. And highly stable transverse and single longitudinal mode operation were observed because the built-in optical waveguide was formed within the V channel.