Short coupled cavity laser
US4528670A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1983 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Feb 25, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/082
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Single longitudinal mode operation is achieved and maintained under CW and high speed (Gbps) current modulation conditions by a short coupled cavity laser including a short cavity semiconductor laser having two parallel mirror facets and a reflective surface spaced apart from and in predetermined relationship with one of the mirror facets. A short external cavity resonator is formed between the one mirror facet and the reflective surface. In general, the laser cavity length is related to the external cavity resonator length by the equation, nL=md, where nL is the effective optical length of the injection laser, d is the length of the external cavity resonator, and m is a positive number preferably between 2 and 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.