CIRCULARLY POLARIZED SPIN SEMICONDUCTOR LASER EMPLOYING MAGNETIC SEMICONDUCTOR AND LASER LIGHT EMITTING METHOD

摘要

PROBLEM TO BE SOLVED: To solve the problem of a prior art circularly polarized semiconductor laser that the degree of circular polarization is insufficient.;SOLUTION: The circularly polarized spin semiconductor laser can emit laser light circularly polarized perfectly by current injection using p-type and n-type half metal magnetic semiconductors manufactured by doping a semiconductor with transition metal atoms and further doping it with acceptors or donors, or p-type and n-type half metal magnetic semiconductors manufactured by fixing gates to these magnetic semiconductors and regulating/controlling a ferromagnetic state by a field effect.;COPYRIGHT: (C)2003,JPO