Surface emitting laser incorporating third reflector
US9112331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2012 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Jul 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/3201
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Surface emitting laser structures that include a partially reflecting element disposed in the laser optical cavity are disclosed. A vertical external cavity surface emitting laser (VECSEL) structure includes a pump source configured to emit radiation at a pump wavelength, λpump, an external out-coupling reflector, a distributed Bragg reflector (DBR,) and an active region arranged between the DBR and the out-coupling reflector. The active region is configured to emit radiation at a lasing wavelength, λlase. The VECSEL structure also includes partially reflecting element (PRE) arranged between the gain element and the external out-coupling reflector. The PRE has reflectivity of between about 30% and about 70% for the radiation at the lasing wavelength and reflectivity of between about 30% and about 70% for the radiation at the pump wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.