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	Optical refrigerator using reflectivity tuned dielectric mirror
	BUCHWALD, MELVIN I.; EDWARDS, BRADLEY C.; EPSTEIN, RICHARD I.
	1999-11-01
著作权人	REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE
专利号	AU1999035519A1
国家	澳大利亚
文献子类	发明申请
其他题名	Optical refrigerator using reflectivity tuned dielectric mirror
英文摘要	Optical refrigerator using reflectivity tuned dielectric mirrors. Selected working materials can be optically pumped using monochromatic radiation such that the resulting fluorescence has an average photon energy higher than that of the pumping radiation; that is, net anti-Stokes fluorescence. If the quantum efficiency is sufficiently high, the working material will cool, and an optical refrigeration can be achieved. Parallel mirrored faces are employed to increase the optical path of the incident pumping radiation within the working material by multiple reflections. Reflectivity tuned dielectric mirrors which allow higher-energy fluorescence photons to readily escape from the working material while inhibiting the escape of the lower-energy photons which are consequently partially trapped in the working material and ultimately reabsorbed and refluoresced at higher energies are employed. This increases the optical refrigerator efficiency. An efficient geometry for the cooling material is a disk having a large diameter and a small height, since the fluorescence can predominantly escape through the tuned mirror on one end face of the working material. An alternative cooling element could be approximately cubic with tuned mirrors on the sides as well as on one end. In another embodiment of the invention, photocells are used to convert escaping fluorescence energy into electricity, thereby reducing the power requirements of the optical refrigerator and reducing the amount of waste that must be removed from the vicinity of the working material.
公开日期	1999-11-01
申请日期	1999-04-09
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/52199]
专题	半导体激光器专利数据库
作者单位	REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE
推荐引用方式 GB/T 7714	BUCHWALD, MELVIN I.,EDWARDS, BRADLEY C.,EPSTEIN, RICHARD I.. Optical refrigerator using reflectivity tuned dielectric mirror. AU1999035519A1. 1999-11-01.

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