High efficiency injection laser cavities | |
GORDON, EUGENE IRVING; MAYDAN, DAN | |
1973-02-06 | |
著作权人 | BELL TELEPHONE LABORATORIES, INCORPORATED |
专利号 | US3715685 |
国家 | 美国 |
文献子类 | 授权发明 |
其他题名 | High efficiency injection laser cavities |
英文摘要 | The specification describes injection lasers employing heterosemiconductor structures for obtaining an enlarged cross-sectional area cavity defined by an optical waveguide terminated by the cleaved faces of the semi-conductor structure (usually known as mirrors). The enlarged area of the cavity allows higher power output from the laser for the same power density on the mirrors. The power density is limited by damage to the mirrors. The waveguide produces an output consisting of two plane wave lobes for each mode. Techniques for mode enhancement are described from which higher ultimate power for a single mode and higher efficiency can e predicted without exciting modes of other order. Separation between the thresholds of competing modes can be enhanced, for example, by placing a spherical reflector in the path of one output lobe to focus the energy back into the original cavity while at the same time aperturing the mirror to block modes of other order. This expedient is based upon the uniqueness of the lobe angle for a given mode. Also described is a technique for combining the dual lobe output characteristic of this laser structure by using a beam splitter in reverse. |
公开日期 | 1973-02-06 |
申请日期 | 1971-04-30 |
状态 | 失效 |
内容类型 | 专利 |
源URL | [http://ir.opt.ac.cn/handle/181661/47246] ![]() |
专题 | 半导体激光器专利数据库 |
作者单位 | BELL TELEPHONE LABORATORIES, INCORPORATED |
推荐引用方式 GB/T 7714 | GORDON, EUGENE IRVING,MAYDAN, DAN. High efficiency injection laser cavities. US3715685. 1973-02-06. |
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