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	Distributed feedback semiconductor laser and manufacture thereof
	MIHARA TAKASHI
	1990-10-15
著作权人	OLYMPUS OPTICAL CO LTD
专利号	JP1990254778A
国家	日本
文献子类	发明申请
其他题名	Distributed feedback semiconductor laser and manufacture thereof
英文摘要	PURPOSE:To obtain laser rays excellent in quality with a low power consumption without any mode separation and mode hopping by a method wherein many active layers formed in fine lines are arranged at a prescribed interval. CONSTITUTION:Active layers of quantum well structure are arranged on a clad layer, where the active layers are constituted in such a manner that many active layers 2-1, 2-2,... formed in fine lines whose widths are smaller than the de Broglie wavelength of electrons are arranged at a prescribed, accurate interval to serve as quantum fine lines. An interval of A at which the fine line active layers 2-1, 2-2,... are arranged is set to be a length proportional to an integer multiple of a half of oscillation wavelength lambda. Therefore, the fine line active layers 2-1, 2-2,... function as not only an active layer but also a tuner. By this setup, in a semiconductor laser of this design, a threshold current can be decreased by effectively trapping a current to realize a low power consumption, and a tuner for distributed feedback is concurrently formed, so that semiconductor laser rays of single wavelength excellent in quality without any mode separation and mode hopping can be obtained from a semiconductor laser of this design.
公开日期	1990-10-15
申请日期	1989-03-29
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/66083]
专题	半导体激光器专利数据库
作者单位	OLYMPUS OPTICAL CO LTD
推荐引用方式 GB/T 7714	MIHARA TAKASHI. Distributed feedback semiconductor laser and manufacture thereof. JP1990254778A. 1990-10-15.

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