M. Linnik et A. Christou, Optimization of III-V compound semiconductor heterostructures for distributed Bragg reflector applications in VCSELs, MAT SCI E B, 80(1-3), 2001, pp. 245-247
A selectively oxidized vertical cavity surface emitting laser (VCSEL) has b
een designed and fabricated for operation at a wavelength of 1.546 mum. The
device structure was grown on an InP substrate using III-V quaternary semi
conductor alloys for the two mirror stacks and unstrained multi-quantum wel
ls for the active layer. A threshold current as low as 2.2 mA has been achi
eved. The influence of the intentional, and growth-related compositional gr
ading at the heterointerfaces on the mirror reflectivity and laser characte
ristics has been investigated, and key sensitivities to laser performance h
ave been determined. (C) 2001 Published by Elsevier Science B.V.