Grating coupled emission (GCE) and distributed feedback (DFB) lasers using Pb1-xSnxSe/ Pb1-x-y EuYSnxSe double-heterostructure stripe geometry structure and grown by molecular beam epitaxy are reported. The GCE lasers are based on the distributed Bragg reflector structure. They have an active injected region and a passive corrugated region with a periodicity of 1.56 μm, in order to provide second-order Bragg reflection. The lasers are mounted upside down, with the substrate facing the cold stud, in order to be able to detect the radiation (from the grating region) emitted in the perpendicular direction. They have a multimode emission with a spectral width of ~0.1 μm. They operate in CW mode up to 60 K and have a narrow far-field pattern. The DFB lasers have a periodic constant of 0.78 μm. They have a thin top cladding layer and a metal contact layer that was put directly on top of the gratings. They operate in CW mode up to 90 K and in the pulse mode up to 100 K. They are unique in their low tuning rate with injection current, 4 cm-1/A, and in their ability to withstand high CW injection currents without damage.
|Number of pages||2|
|State||Published - 1988|