Laguerre–Gaussian vortex mode generation from astigmatic semiconductor microcavity | Zendy

Kohki Nakagawa | Zendy; Keisaku Yamane | Zendy; Ryuji Morita | Zendy; Yasunori Toda | Zendy

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Laguerre–Gaussian vortex mode generation from astigmatic semiconductor microcavity

Author(s) -

Kohki Nakagawa,

Keisaku Yamane,

Ryuji Morita,

Yasunori Toda

Publication year - 2020

Publication title -

applied physics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.911

H-Index - 94

eISSN - 1882-0786

pISSN - 1882-0778

DOI - 10.35848/1882-0786/ab7bf7

Subject(s) - vortex , optical vortex , physics , optics , gaussian , gaussian beam , laser , mode (computer interface) , fabrication , optical cavity , materials science , beam (structure) , quantum mechanics , mechanics , medicine , alternative medicine , pathology , computer science , operating system

Laguerre–Gaussian (LG) vortex mode generations are demonstrated by employing the optical injection of a higher-order transverse mode into a vertical cavity surface emitting laser. In addition to the coherent LG injection, Hermite–Gaussian (HG) injection also enable LG mode generation, where the chirality is controllable by the HG mode angle of the injection beam. The result can be well understood when we consider the astigmatic Gouy phase shifts within the microcavity. HG induced vortex generation eases the symmetrical requirements of the cavity and thus extends flexibility as regards the design and fabrication of vortex lasers.

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