发明名称 |
CIRCULAR POLARIZATION SPIN SEMICONDUCTOR LASER USING MAGNETIC SEMICONDUCTOR AND LASER BEAM GENERATING METHOD |
摘要 |
<p>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. <IMAGE></p> |
申请公布号 |
EP1478066(A1) |
申请公布日期 |
2004.11.17 |
申请号 |
EP20030734850 |
申请日期 |
2003.01.27 |
申请人 |
JAPAN SCIENCE AND TECHNOLOGY AGENCY |
发明人 |
YOSHIDA, HIROSHI;SATO, KAZUNORI |
分类号 |
H01S5/32;H01S5/06;H01S5/30;H01S5/343;H01S5/347;(IPC1-7):H01S5/34 |
主分类号 |
H01S5/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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