BURIED SINGLE HETEROSTRUCTURE DFB AND DBR LASERS
Original Publication Date: 1979-Jun-30
Included in the Prior Art Database: 2004-Apr-01
Xerox Disclosure Journal
In Figure 1, a buried single heterostructure laser 10 comprises a GaAs substrate 12 upon which is formed the mesa 14, active layer 16 and a grating 26 on the surface of the active layer 16. This mesa can be made by marking and etching after layer growth. The grating 26 may be fabricated for distributed feedback (DFB Figure 2) or fabricated as a distributed Bragg reflector (DBR Figure 3). Second stage growth provides layers 18, 20 and 22.