Inverse Design of Whispering-Gallery Nanolasers with Tailored Beam Shape and Polarization.

ABSTRACT: Control over the shape and polarization of the beam emitted by a laser source is important in applications such as optical communications, optical manipulation and high-resolution optical imaging. In this paper, we present the inverse design of monolithic whispering-gallery nanolasers which emit along their axial direction with a tailored laser beam shape and polarization. We design and experimentally verify three types of submicron cavities, each one emitting into a different laser radiation mode: an azimuthally polarized doughnut beam, a radially polarized doughnut beam and a linearly polarized Gaussian-like beam. The measured output laser beams yield a field overlap with respect to the target mode of 92%, 96%, and 85% for the azimuthal, radial, and linearly polarized cases, respectively

SUBMITTER: Diez I 

PROVIDER: S-EPMC10119977 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature