Distributed optical feedback by gain coupling in V-groove quantum-wire (QWR) lasers is investigated by using (In) GaAs/AlGaAs active materials grown by metalorganic chemical vapor deposition (MOCVD). In order to avoid grating overgrowth during the fabrication of DFB structures, a newly developed constant MOCVD growth method is employed. Spectral gain anisotropy near the Bragg wavelength, resulting from optical feedback along the DFB direction, is clearly noted from InGaAs/AlGaAs QWR lasers at room temperature both theoretically and experimentally.
|Number of pages||4|
|Journal||Journal of the Korean Physical Society|
|Publication status||Published - 2004 Sept|
- Distributed feedback
- Semiconductor quantum wires
ASJC Scopus subject areas
- Physics and Astronomy(all)