Gordeev Nikita Yu, Payusov Alexey S, Shernyakov Yuri M, Mintairov Sergey A, Kalyuzhnyy Nikolay A, Kulagina Marina M, Maximov Mikhail V
Opt Lett. 2015 May 1;40(9):2150-2. doi: 10.1364/OL.40.002150.
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.
我们报道了具有加宽波导的InGaAs/GaAs量子阱边缘发射激光器的横向单模发射。这些激光器基于耦合大光学腔（CLOC）结构，其中宽有源波导的高阶垂直模式由于其共振隧穿到耦合单模无源波导中而受到抑制。CLOC激光器在连续波（CW）工作中表现出稳定的高斯形垂直远场分布，半高全宽（FWHM）发散减小至约22°。
