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	Surface emitting laser element, surface emitting laser array, optical scanning apparatus, image forming apparatus, and optical communication system
	MOTOMURA, HIROSHI; JIKUTANI, NAOTO; SATO, SHUNICHI
	2008-03-06
著作权人	RICOH COMPANY, LTD.
专利号	US20080056321A1
国家	美国
文献子类	发明申请
其他题名	Surface emitting laser element, surface emitting laser array, optical scanning apparatus, image forming apparatus, and optical communication system
英文摘要	A vertical cavity surface emitting laser element is disclosed that includes a substrate, a first semiconductor multilayer reflector including plural pairs of layers having differing refractive indexes and thermal resistances, a resonator region including an active layer, and a second semiconductor multilayer reflector including plural pairs of layers having differing refractive indexes and thermal resistances. At least one pair of layers of the first semiconductor multilayer reflector and/or the second semiconductor multilayer reflector includes a first layer with a lower thermal resistance that has an optical thickness greater than ¼ of the oscillation wavelength and a second layer with a higher thermal resistance that has an optical thickness less than ¼ of the oscillation wavelength. The sum of the optical thickness of the first layer and the optical thickness of the second layer is equal to m/4 times the oscillation wavelength (m: even number≧2).
公开日期	2008-03-06
申请日期	2007-08-27
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/61444]
专题	半导体激光器专利数据库
作者单位	RICOH COMPANY, LTD.
推荐引用方式 GB/T 7714	MOTOMURA, HIROSHI,JIKUTANI, NAOTO,SATO, SHUNICHI. Surface emitting laser element, surface emitting laser array, optical scanning apparatus, image forming apparatus, and optical communication system. US20080056321A1. 2008-03-06.

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