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	半導体レ-ザ駆動装置
	吉川 則之; 田村 光夫; 粂 雅博; 清水 裕一; 伊藤 国雄
	1995-05-31
著作权人	MATSUSHITA ELECTRIC IND CO LTD
专利号	JP1995050805B2
国家	日本
文献子类	授权发明
其他题名	半導体レ-ザ駆動装置
英文摘要	PURPOSE:To meet a demand for a low noise and provide a packaged semiconductor laser drive by monitoring a gallium arsenide integrated circuit convoluted by a high frequency current as well as a beam outgoing in the froward direction of a semiconductor laser and causing a silicon I.C. having a function of negative feedback to turn into an integrated hybrid one. CONSTITUTION:When a semiconductor laser 8 operates in a constant light output state, a signal generated out of a built-in PIN photodiode 13 is fed to an external (constant light output drive) circuit through a through type 14 and a DC current that flows in the semiconductor laser 8 is controlled so that its signal can be maintained at a constant rate. A high-frequency current fed from a gallium arsenide integrated circuit for convoluting the high frequency is convoluted to the DC current through a load coil 6 and a coupling capacitor 7. Accordingly, the semiconductor laser makes oscillation having a stable noise level. Yet, a portion of the beam outgoing in the forward direction of the semiconductor laser is taken out and is fed to the external PIN photodiode 9 and then, the signal is amplified and a noise decreases by causing the semiconductor laser 8 to have a negative feedback function.
公开日期	1995-05-31
申请日期	1986-08-12
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/70718]
专题	半导体激光器专利数据库
作者单位	MATSUSHITA ELECTRIC IND CO LTD
推荐引用方式 GB/T 7714	吉川 則之,田村 光夫,粂 雅博,等. 半導体レ-ザ駆動装置. JP1995050805B2. 1995-05-31.

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