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	Optical microphone
	FUJIMURA KATSUNORI; MATSUMOTO MICHIO
	1986-01-13
著作权人	MATSUSHITA DENKI SANGYO KK
专利号	JP1986006618A
国家	日本
文献子类	发明申请
其他题名	Optical microphone
英文摘要	PURPOSE:To eliminate mode jumping and to obtain a stable light output by holding temperature variation of a semiconductor laser at constant temperature with good responsibility. CONSTITUTION:A stem 23 where the semiconductor laser 1 is bonded is an anode and an insulator 34 of ceramic is a cathode 35. A temperature sensor 11 is fixed to a groove formed in a stem 33 of the semiconductor laser 1 with a heat-conductive adhesive 32, the distance between the laser 1 and temperature sensor 11 is 4mm., and this semiconductor laser part is installed in the optical microphone. Consequently, the capacity for installing the temperature sensor 11 is not necessary and heat capacity 36 is therefore reduced; the endothermic quantity of a Peltier element 12 is reduced and the temperature of the semiconductor laser 1 is conducted sensitively, so temperature variation of the semiconductor laser is held at constant temperature with good responsibility, mode jumping is eliminated, and a stable light output is obtained. Further, the size and driving current of the Peltier are reduced.
公开日期	1986-01-13
申请日期	1984-06-21
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/62929]
专题	半导体激光器专利数据库
作者单位	MATSUSHITA DENKI SANGYO KK
推荐引用方式 GB/T 7714	FUJIMURA KATSUNORI,MATSUMOTO MICHIO. Optical microphone. JP1986006618A. 1986-01-13.

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