OPTIMIZATION OF LASER BAR ORIENTATION FOR NONPOLAR AND SEMIPOLAR (Ga,Al,In,B)N DIODE LASERS

摘要

PROBLEM TO BE SOLVED: To provide a nonpolar or semipolar Group-III nitride diode laser whose optical gain is controlled by orienting an axis of light propagation in relation to an optical polarization direction or crystallographic orientation of the diode laser.SOLUTION: The axis of light propagation is substantially perpendicular to the mirror facets of the diode laser, and the optical polarization direction is determined by the crystallographic orientation of the diode laser. To maximize the optical gain, the axis of light propagation is oriented substantially perpendicularly to the optical polarization direction or crystallographic orientation.