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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