Abstract
Vertical Cavity Surface Emitting lasers (VCSELs) are compact and efficient light sources useful for a variety of applications. However, due to lack of a transverse mode control mechanism, such lasers suffer from poor spatial beam quality, intrinsic spatiotemporal instabilities and nonlinear destabilizing effects such as filamentation and spatial hole burning [1]. Therefore, there is a need for new strategies to manipulate the light wave dynamics to enhance the stability of VCSELs. Recently, non-Hermitian media have become a flexible platform for new functionalities such as asymmetric coupling, unidirectional invisibility, single mode lasing [2-3]. In this presentation, we propose a novel stabilization mechanism for VCSLEs to obtain bright and narrow beams. The mechanism relies on non-Hermitian configuration of the laser potential, achieved by simultaneous spatial modulation of the refractive index and gain-loss profiles.
© 2019 IEEE
PDF ArticleMore Like This
Mohammad H. Teimourpour, Hamed Dalir, Elham Heidari, Volker J. Sorger, and Ray T. Chen
FTu3B.7 CLEO: QELS_Fundamental Science (CLEO:FS) 2019
Mingsen Pan, Han Zhao, Pei Miao, Stefano Longhi, and Liang Feng
FM1B.3 CLEO: QELS_Fundamental Science (CLEO:FS) 2019
Midya Parto, Christian Leefmans, James Williams, and Alireza Marandi
FM4B.4 CLEO: Fundamental Science (CLEO:FS) 2023