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	Meßvorrichtung für die Messung der absoluten Polarisation von Alkaliatomen sowie Verfahren zum Betreiben der Meßvorrichtung
	APPELT STEPHAN; SHAH NADIM JONI; ÜNLÜ TIMUR
	2001-05-23
著作权人	FORSCHUNGSZENTRUM JÜLICH GMBH
专利号	DE19928032C2
国家	德国
文献子类	授权发明
其他题名	Meßvorrichtung für die Messung der absoluten Polarisation von Alkaliatomen sowie Verfahren zum Betreiben der Meßvorrichtung
英文摘要	The invention concerns a device for the determination of the absolute polarisation of alkali metal atoms. The device can inter alia be used for the diagnosis of alkali metal polarisation in a polariser for inert gases. The device includes a detection laser, which together with a lambd/4 plate creates circularly polarised light. A sensor for the measurement of the light absorbed by the sample of the polariser is provided. A Helmholtz coil pair serves for the creation of a static magnetic field B0. An oscillating magnetic field is created with an RF coil. A gradient coil serves for the creation of a linear magnetic field gradient. Various optical components are present. An electronic processor effects the determination of the absolute polarisation of the alkali metal atoms. All the said components with the exception of the Helmholtz coils are firmly mounted onto a platform which can be moved parallel to the direction of the B0 field. Means for controlling the temperature of the laser for the detection of the polarisation of the alkali metal atoms are provided. The means for controlling the temperature of the laser for the detection of the polarisation of the alkali metal atoms include a temperature sensor, with which the temperature of the laser is measured, a heating/cooling device, with which the laser is heated or cooled, and also a control device, which controls the heating/cooling device depending on the measured temperature of the laser, so that the temperature of the laser is held constant. Compared to the state of the art, faster and better measurement results can thus be achieved.
公开日期	2001-05-23
申请日期	1999-06-18
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/36581]
专题	半导体激光器专利数据库
作者单位	FORSCHUNGSZENTRUM JÜLICH GMBH
推荐引用方式 GB/T 7714	APPELT STEPHAN,SHAH NADIM JONI,ÜNLÜ TIMUR. Meßvorrichtung für die Messung der absoluten Polarisation von Alkaliatomen sowie Verfahren zum Betreiben der Meßvorrichtung. DE19928032C2. 2001-05-23.

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