Compact electronic pumping-type semiconductor laser
US5125000A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1991 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Apr 4, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/3211
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser having a volume of less than 1 cubic centimeter comprises a semiconductor constructed to permit the emission of a coherent beam of electromagnetic radiation upon the application of an electron beam to one of its surfaces, and an electron bombardment pumping device for applying the electron beam. The electron bombardment device includes at least one microdot emissive cathode cold electron source having a volume less than 1 cm.sup.3. In a preferred embodiment the laser comprises a plurality of electron bombardment devices formed into a matrix or row of microdot cathodes. A focusing device is provided for focusing the electron beams onto a plurality of excitement strips corresponding to a plurality of semiconductors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.