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Lead halide perovskite vortex microlasers.

ABSTRACT: Lead halide perovskite microlasers have been very promising for versatile optoelectronic applications. However, most perovskite microlasers are linearly polarized with uniform wavefront. The structured laser beams carrying orbital angular momentum have rarely been studied and the applications of perovskites in next-generation optical communications are thus hindered. Herein, we experimentally demonstrate the perovskite vortex microlasers with highly directional outputs and well-controlled topological charges. High quality gratings have been experimentally fabricated in perovskite film and the subsequent vertical cavity surface emitting lasers (VCSELs) with divergent angles of 3^o are achieved. With the control of Archimedean spiral gratings, the wavefront of the perovskite VCSELs has been switched to be helical with topological charges of q = -4 to 4. This research is able to expand the potential applications of perovskite microlasers in hybrid integrated photonic networks, as well as optical computing.

SUBMITTER: Sun W

PROVIDER: S-EPMC7519163 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Lead halide perovskite vortex microlasers.

Sun Wenzhao W Liu Yilin Y Qu Geyang G Fan Yubin Y Dai Wei W Wang Yuhan Y Song Qinghai Q Han Jiecai J Xiao Shumin S

Nature communications 20200925 1

Lead halide perovskite microlasers have been very promising for versatile optoelectronic applications. However, most perovskite microlasers are linearly polarized with uniform wavefront. The structured laser beams carrying orbital angular momentum have rarely been studied and the applications of perovskites in next-generation optical communications are thus hindered. Herein, we experimentally demonstrate the perovskite vortex microlasers with highly directional outputs and well-controlled topolo ...[more]

PMID: 32978397

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