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	Optical sources having a strongly scattering gain medium providing laser-like action
	NABIL M. LAWANDY; LAWANDY, NABIL M.
	1995-10-09
著作权人	BROWN UNIVERSITY RESEARCH FOUNDATION
专利号	AU1995019763A1
国家	澳大利亚
文献子类	发明申请
其他题名	Optical sources having a strongly scattering gain medium providing laser-like action
英文摘要	A gain medium is comprised of a multi-phase system wherein: a first phase is an electromagnetic radiation emission phase; a second phase is an electromagnetic radiation scattering phase; and a third phase is a transparent matrix phase. By example, the emission phase may consist of dye molecules, the scattering phase may consist of high contrast particles, and the matrix phase may consist of a solvent such as methanol. In some embodiments of this invention the emission and scattering phases may be the same phase, as when semiconductor particles are employed. A smallest dimension of a body comprised of the gain medium may be less than a scattering length associated with the scattering phase. It is shown that nearly thresholdless laser behavior is observed in strongly scattering optically pumped dye-methanol solutions containing colloidal TiO2 or Al2O3 ruby nanoparticles. The emission from the high gain colloid exhibits a slope change in the linear input-output characteristics above a critical pump pulse energy. The change in slope is accompanied by a spectral line narrowing with a bichromatic spectrum appearing at high pump energies.
公开日期	1995-10-09
申请日期	1995-03-06
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/59942]
专题	半导体激光器专利数据库
作者单位	BROWN UNIVERSITY RESEARCH FOUNDATION
推荐引用方式 GB/T 7714	NABIL M. LAWANDY,LAWANDY, NABIL M.. Optical sources having a strongly scattering gain medium providing laser-like action. AU1995019763A1. 1995-10-09.

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