Tunable 2-μm optical vortex parametric oscillator | Zendy

Taximaiti Yusufu | Zendy; Yu Tokizane | Zendy; Masaki Yamada | Zendy; Katsuhiko Miyamoto | Zendy; Takashige Omatsu | Zendy

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Tunable 2-μm optical vortex parametric oscillator

Author(s) -

Taximaiti Yusufu,

Yu Tokizane,

Masaki Yamada,

Katsuhiko Miyamoto,

Takashige Omatsu

Publication year - 2012

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.023666

Subject(s) - topological quantum number , optics , optical parametric oscillator , physics , optical vortex , vortex , wavelength , signal beam , beam (structure) , quantum mechanics , thermodynamics

We generated tunable 2-μm optical vortex pulses with a topological charge of 1 or 2 in the wavelength range 1.953-2.158 μm by realizing anisotropic transfer of the topological charge from the pump beam to the signal output in a vortex-pumped half-symmetric optical parametric oscillator. A maximum vortex output energy of 2.1 mJ was obtained at a pump energy of 22.8 mJ, which corresponds to a slope efficiency of 15%. The topological charges of the signal and idler output were investigated using a shearing interferometric technique employing a low-spatial-frequency transmission grating.

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