The Letter reports the fabrication and low divergence operation of an electrically pumped circular grating surface emitting DBR laser on an InGaAs/GaAs SQW structure. A threshold current below 85 mA, output power of more than 20 mW and a divergence of less than 1° FWHM were obtained.
|Original language||English (US)|
|Number of pages||3|
|Publication status||Published - Aug 5 1993|
ASJC Scopus subject areas
- Electrical and Electronic Engineering