Method and apparatus for locking and scanning the output frequency from a laser cavity
US9083145B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2013 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | May 22, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1062
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method that can be employed to lock and scan the output of a laser cavity (2) is described. The system and method involves the use of a signal generator for generating an error signal between an output of the laser cavity (28) and the transmission (28) of the laser through a tunable external reference cavity (3). A dual piezo-actuated mirror (6b) permits processing of the error signal (26) with separate signal processing circuits (29a, 29b) used to provide an electrical feedback signal to the two piezo-electric crystals (22, 23b). When incorporated within a laser cavity the described system and methodology can be used to lock and scan the output of the laser cavity while providing the laser output with a reduced linewidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.