Abstract
This paper studies a novel technique for enhancing the single mode properties of large-area oxide-confined vertical cavity surface emitting lasers (VCSELs). It utilizes a nonplanar shadow masked epitaxial growth to spatially detune part of the upper Bragg stack from the lower stack. The resulting mirror reflectivity modulation is used to enhance the discrimination between the lateral modes. Compared to other techniques, this method results in a larger difference in threshold gain between the lateral modes. We have developed a quasi-three-dimensional (3-D) optical model to analyze this laser. Simulation results indicate that even a small curvature can enhance the mode discrimination, and single mode operation may be possible for VCSEL diameters much greater than 2 /spl mu/m.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
