Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101994
Title: Multiple nonlinear Bragg diffraction of femtosecond laser pulses in a χ2 photonic lattice with hexagonal domains
Authors: Vyunishev, A. M.
Arkhipkin, V. G.
Baturin, I. S.
Akhmatkhanov, A. R.
Ya, SHUR, V.
Chirkin, A. S.
Issue Date: 2018
Publisher: Institute of Physics Publishing
Citation: Multiple nonlinear Bragg diffraction of femtosecond laser pulses in a χ2 photonic lattice with hexagonal domains / A. M. Vyunishev, V. G. Arkhipkin, I. S. Baturin, et al. — DOI 10.1088/1612-202X/aaa618 // Laser Physics Letters. — 2018. — Vol. 15. — Iss. 4. — 045401.
Abstract: The frequency doubling of femtosecond laser pulses in a two-dimensional (2D) rectangular nonlinear photonic lattice with hexagonal domains is studied experimentally and theoretically. The broad fundamental spectrum enables frequency conversion under nonlinear Bragg diffraction for a series of transverse orders at a fixed longitudinal quasi-phase-matching order. The consistent nonstationary theory of the frequency doubling of femtosecond laser pulses is developed using the representation based on the reciprocal lattice of the structure. The calculated spatial distribution of the second-harmonic spectral intensity agrees well with the experimental data. The condition for multiple nonlinear Bragg diffraction in a 2D nonlinear photonic lattice is offered. The hexagonal shape of the domains contributes to multibeam second harmonic excitation. The maximum conversion efficiency for a series of transverse orders in the range 0.01%-0.03% is obtained. © 2018 Astro Ltd.
Keywords: FEMTOSECOND PULSES
NONLINEAR BRAGG DIFFRACTION
NONLINEAR PHOTONIC LATTICE
SECOND HARMONIC GENERATION
URI: http://hdl.handle.net/10995/101994
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85046725421
PURE ID: 7035400
ISSN: 16122011
DOI: 10.1088/1612-202X/aaa618
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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