In this letter, we present the first room temperature continuous wave operation of circular-grating surface-emitting DBR lasers. The structure is an In GaAs/GaAs strained multiquantum-well. A modified fabrication process with a better control on the steps is used. A CW threshold current as low as 26 mA at a lasing wavelength of about 977 nm are reported. This is the first demonstration of CW operation for these lasers in any material system.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering