发明名称 Optical disc drive apparatus with an indirect semiconductor laser containing an asymmetric quantum well structure
摘要 An indirect semiconductor laser having an indirect semiconductor used as the material of an active layer is used, instead of a conventional direct semiconductor laser so as to obtain a reproducing optical source, in order to reduce optical interference noise of the laser caused in the optical head in an optical disc apparatus, and to eliminate the necessity of high frequency wave convolution, thereby it is possible to reduce the cost.
申请公布号 US2009168634(A1) 申请公布日期 2009.07.02
申请号 US20090318923 申请日期 2009.01.13
申请人 HITACHI, LTD. 发明人 ISSHIKI FUMIO
分类号 G11B7/00;G11B7/125;G11B7/135;H01S5/024;H01S5/026;H01S5/062;H01S5/0683;H01S5/14;H01S5/34;H01S5/343 主分类号 G11B7/00
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