Lead halide perovskite vortex microlasers

Wenzhao Sun, Yilin Liu, Geyang Qu, Yubin Fan, Wei Dai, Yuhan Wang, Qinghai Song, Jiecai Han and Shumin Xiao ()
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Wenzhao Sun: Harbin Institute of Technology
Yilin Liu: Harbin Institute of Technology
Geyang Qu: Harbin Institute of Technology
Yubin Fan: Harbin Institute of Technology
Wei Dai: Harbin Institute of Technology
Yuhan Wang: Harbin Institute of Technology
Qinghai Song: Harbin Institute of Technology
Jiecai Han: Harbin Institute of Technology
Shumin Xiao: Harbin Institute of Technology

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: 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 3o 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.

Date: 2020
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DOI: 10.1038/s41467-020-18669-1

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