Method of and apparatus for driving semiconductor laser
US4712218A · kind A · utility
9Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1984 |
| Grant date | Dec 8, 1987 |
| Priority date | — |
| Expiry date | Mar 19, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0654
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to suppress laser noise, a semiconductor laser oscillating in a single mode under direct-current drive is driven by a signal with a high frequency current superposed on a direct current. In particular, the laser is driven to be brought into continuous wave pulsed oscillation at a pulse width of at most 1.2 ns to achieve the desired noise suppression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.