Vertical external cavity surface emitting laser devices allowing high coherence, high power and large tunability
US9774165B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 21, 2015 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | May 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/3412
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser device is provided for generating an optical wave at a laser frequency, including (i) a semiconductor element having a gain region with quantum wells, the gain region being located between a first mirror and an exit region defining an optical microcavity, (ii) a second mirror distinct from the semiconductor element and arranged so as to form with the first mirror an external optical cavity including the gain region, (iii) a pump for pumping the gain region so as to generate the optical wave, wherein the optical microcavity with the gain region and the external optical cavity are arranged so that a spectral ratio between the Half Width Half Maximum (HWHM) spectral bandwidth of the modal gain and a free spectral range of the external cavity in the range of 2 to 50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.