Continuous-wave operation of phase-coupled vertical-cavity surface-emitting laser arrays

Monti di Sopra, F.; Brunner, M.; Gauggel, H.-P.; Zappe, H. P.; Moser, M.; Ho¨vel, R.; Kapon, E.
October 2000
Applied Physics Letters;10/9/2000, Vol. 77 Issue 15
Academic Journal
Coupled arrays of vertical-cavity surface-emitting lasers were realized by patterning the reflectivity of the top-distributed Bragg reflector using a phase-matching layer and a metal grid. For improved current injection and better heat dissipation the devices were selectively oxidized. Continuous-wave room-temperature operation of these arrays has been achieved at 960 nm. Near- and far-field measurements confirm the phase-coupling in a typical out-of-phase mode pattern. Analysis of the differential efficiency reveals a strong decrease when the number of lasing pixels and hence the mesa size is increased. © 2000 American Institute of Physics.


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