ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We report preliminary results on the low-threshold operation of interrupted-growth GaAs/(Al,Ga)As step-index separate-confinement heterostructure lasers grown on misoriented substrates by molecular-beam epitaxy. Growth was performed simultaneously on (100) substrates misoriented 1° and 6°, respectively, towards the nearest (111)A face. The 6° orientation exhibited the better morphology and lowest threshold current density (260 A cm−2 for a cavity length of 607 μm). The 1° orientation yielded the higher slope efficiency (0.43 W/A for a single facet). The growth was twice interrupted for 3 min each time for Al effusion cell temperature adjustment between the growth of the inner and outer cladding layers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.340096