Focusing Effect in Multimode Vertical Cavity Surface Emitting Lasers by Parallel Trenches Surface Profiling

• Main Authors: TEE, Chyng Wen, Zhao, X., Ingham, J. D., Penty, R. V., White, I. H.
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2005
• Subjects: Apertures; Distributed Bragg reflectors; Etching; Focusing; Laser beams; Optical surface waves; Particle beams; Surface emitting lasers; Surface waves; Vertical cavity surface emitting lasers; Physical Sciences and Mathematics
• Online Access: https://ink.library.smu.edu.sg/lkcsb_research/3351; https://doi.org/10.1109/CLEOPR.2005.1569420
• Institution: Singapore Management University

Surface profiling of parallel trenches is shown to be capable of introducing a transverse waveguiding effect to the optical modes of a gain-guided VCSEL, resulting in a dramatic reduction of emission spot-size and spatial filamentation.