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Circular polarization spin semiconductor laser using magnetic semiconductor and laser beam generating method
Circular polarization spin semiconductor laser using magnetic semiconductor and laser beam generating method
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机译:使用磁半导体的圆偏振自旋半导体激光器和激光束产生方法
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摘要
Disclosed is a spin-based semiconductor laser source capable of generating a completely circularly polarized laser light by injecting current into p-type and n-type half-metal magnetic semiconductor layers. Each of the p-type and n-type half-metal magnetic semiconductor layers is prepared by doping a magnetic semiconductor with a transition metal atom and optionally with an acceptor or donor. Alternatively, each of the p-type and n-type half-metal magnetic semiconductor layers is prepared by providing a gate to a magnetic semiconductor and adjusting/controlling its ferromagnetic state according to the field effect. The present invention can solve the problem concerning the insufficient degree of circular polarization in conventional circular-polarization semiconductor laser sources.
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