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	Apparatus for measuring spectral power of a light beam
	SONOBE, YOUJI; ISHIGAKI, SEIICHI; KIKUGAWA, TOMOYUKI
	1988-07-19
著作权人	ANRITSU CORPORATON, 5-10-27, MINAMIAZABU, MINATO-KU, TOKYO, JAPAN A CORP. OF JAPAN
专利号	US4758086
国家	美国
文献子类	授权发明
其他题名	Apparatus for measuring spectral power of a light beam
英文摘要	In an optical measuring apparatus, a laser beam is transferred to a diffraction grating so that the laser beam is spectrally separated into respective wavelength components. The wavelength components are sequentially guided into a polarizing optical element in which the respective wavelength component are separated into S and P polarized components, when the diffraction grating is rotated. The S and P polarized components of the respective wavelengths are detected by photodetectors and electrical signals from the photodetectors are supplied to a signal processing unit. In the signal processing unit, the electrical signals corresponding to the P and S components are corrected with a spectral efficiency characteristic of the grating, a percent loss characteristic of the polarizing element and photoelectro conversion characteristics of the photodetectors and the corrected signals are analyzed to obtain an absolute value of the laser energy for the respective wavelength.
公开日期	1988-07-19
申请日期	1987-01-27
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/34407]
专题	半导体激光器专利数据库
作者单位	ANRITSU CORPORATON, 5-10-27, MINAMIAZABU, MINATO-KU, TOKYO, JAPAN A CORP. OF JAPAN
推荐引用方式 GB/T 7714	SONOBE, YOUJI,ISHIGAKI, SEIICHI,KIKUGAWA, TOMOYUKI. Apparatus for measuring spectral power of a light beam. US4758086. 1988-07-19.

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