Transverse single-mode edge-emitting lasers based on coupled waveguides.
We report on the transverse single-mode emission from InGaAs/GaAs quantum well edge-emitting lasers with broadened waveguide. The lasers are based on coupled large optical cavity (CLOC) structures where high-order vertical modes of the broad active waveguide are suppressed due to their resonant tunneling into a coupled single-mode passive waveguide. The CLOC lasers have shown stable Gaussian-shaped vertical far-field profiles with a reduced divergence of ∼22° FWHM (full width at half-maximum) in CW (continuous-wave) operation.
Nikita Yu
NY
Gordeev
Alexey S
AS
Payusov
Yuri M
YM
Shernyakov
Sergey A
SA
Mintairov
Nikolay A
NA
Kalyuzhnyy
Marina M
MM
Kulagina
Mikhail V
MV
Maximov
D007834:Lasers; D055620:Optical Phenomena