Wavelength control system for semiconductor laser

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	Wavelength control system for semiconductor laser
其他题名	Wavelength control system for semiconductor laser
	INOUE MASAYUKI; ONISHI KUNIKAZU; MIURA YOSHIO; OKAZAKI KICHIZAEMON; FURUYA JUN
	1987-10-23
专利权人	株式会社日立製作所
公开日期	1987-10-23
授权国家	日本
专利类型	发明申请
摘要	PURPOSE:To obtain a laser light source adapted for an optical memory in which PHB phenomenon is applied by using a semiconductor laser with a wavelength control electrode and a wavelength filter for passing only a light of specific wavelength to control the wavelength of the laser light to the specific wavelength value. CONSTITUTION:The output signal of a photodetector 4, to which a laser light 2 from a semiconductor laser 1 is input through a wavelength filter 3 is amplified, detected by an envelope detector 6, the output signal and the output signal of an oscillator 8 of an AC signal are synchronization-detected by a synchronous detector 7, and the output signal and the output signal of the oscillator 8 are added by an adder 9. Unnecessary high frequency components are removed from the output signal by a low pass filter 10 to be input to the terminal l3a of a switch circuit 13, and when terminals l3a, 13c are conducted, they are amplified to be input to an adder 12. The output signal of the oscillator 8 amplified by the amplifier 11 is also input to the adder 13, the output signal IL is input to the wavelength control electrode L of the laser 1 to control the oscillating wavelength.
其他摘要	目的：通过使用具有波长控制电极和波长滤波器的半导体激光器来获得适用于光学存储器的激光光源，该激光光源仅用于通过特定波长的光来控制激光的波长。特定的波长值。组成：光电探测器4的输出信号，通过波长滤波器3输入来自半导体激光器1的激光2，由包络检波器6检测，输出信号和振荡器8的输出信号。AC信号由同步检测器7同步检测，并且振荡器8的输出信号和输出信号由加法器9相加。通过低通滤波器10从输出信号中除去不必要的高频分量。输入到开关电路13的端子l3a，并且当端子l3a，13c导通时，它们被放大以输入到加法器12.由放大器11放大的振荡器8的输出信号也输入到加法器13。输出信号IL输入到激光器1的波长控制电极L，以控制振荡波长。
主权项	-
申请日期	1986-04-16
专利号	JP1987243383A
专利状态	失效
申请号	JP1986085893
公开（公告）号	JP1987243383A
IPC 分类号	G11B7/125 \| H01S5/00 \| H01S5/068 \| H01S5/0687 \| H01S3/133
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/59456
专题	半导体激光器专利数据库
作者单位	株式会社日立製作所
推荐引用方式 GB/T 7714	INOUE MASAYUKI,ONISHI KUNIKAZU,MIURA YOSHIO,et al. Wavelength control system for semiconductor laser. JP1987243383A[P]. 1987-10-23.

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