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公开时间: 2009-03-12      申请时间: 2007-08-27
申请人: NAT UNIV YOKOHAMA

JP2009054795A
patent for invention


标题(英语)

SEMICONDUCTOR LASER


摘要(英语)

PROBLEM TO BE SOLVED: To reduce the coherence of a laser beam emitted by a semiconductor laser using photonic crystals.

SOLUTION: A semiconductor laser using photonic crystals has a chirp structure of gradually changing structural parameters prescribing laser modes in the plane of the photonic crystal. In the plane of the photonic crystal, the laser beam having the wavelength and the phase determined according to each structural parameter is locally generated from each part where different structural parameters are set. By smoothly changing the structural parameters in a gradual chirp form, the laser beam with the wavelength and the phase smoothly changing in the gradual chirp form is emitted.

COPYRIGHT: (C)2009,JPO&INPIT


申请人详细信息

序号 名称 数据格式
1 NAT UNIV YOKOHAMA docdb

发明人详细信息

序号 名称 数据格式
1 BABA TOSHIHIKO docdb
2 WATANABE HIDEKI docdb
3 YOKOYAMA KEISUKE docdb

法律状态

序号 日期 法律代码 详细信息
1 20100611 A621 WRITTEN REQUEST FOR APPLICATION EXAMINATION
2 20111108 A131 NOTIFICATION OF REASONS FOR REFUSAL
3 20111111 A977 REPORT ON RETRIEVAL
4 20111222 A521 WRITTEN AMENDMENT
5 20120229 A02 DECISION OF REFUSAL

文档历史

公开时间: 2009-03-12
JP2009054795A
申请时间: 2007-08-27
JP2007220039

CPC分类


IPC分类

H01S5/12

专利家族

40505615

被引非专利信息

引用阶段 文档类型 文档信息

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