We propose a new method for transverse-mode control in vertical-cavity surface-emitting lasers based on the idea of a Bragg waveguide. This method involves patterning concentric annuli into the top Bragg reflector of a vertical-cavity surface-emitting laser, inducing a cylindrical Bragg waveguide across the laser cavity. We use the effective-index approximation to evaluate the waveguiding effect of patterning the top Bragg reflector. A waveguide model has been developed to design the ideal Bragg waveguide for a specified HE11 mode. The model also calculates the field and power distributions and the optical confinement for the given mode.
© 1999 Optical Society of America
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.5960) Lasers and laser optics : Semiconductor lasers
(160.6000) Materials : Semiconductor materials
(230.1480) Optical devices : Bragg reflectors
(250.7260) Optoelectronics : Vertical cavity surface emitting lasers
Michael G. Greally, Matt J. Steer, Jon E. F. Frost, Jowan Masum, Jon Woodhead, and Mike J. Adams, "Design of a top spatial filter Bragg waveguide vertical-cavity surface-emitting laser," J. Opt. Soc. Am. B 16, 2040-2044 (1999)