Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1088/1612-202X/aaa618

Ключевые слова: nonlinear Bragg diffraction, nonlinear photonic lattice, second harmonic generation, femtosecond pulses

Аннотация: 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.

Журнал: LASER PHYSICS LETTERS

Выпуск журнала: Vol. 15, Is. 4

Номера страниц: 45401

ISSN журнала: 16122011

Место издания: BRISTOL

Издатель: IOP PUBLISHING LTD

• Vyunishev A.M. (Kirensky Inst Phys, Fed Res Ctr KSC SB RAS, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia)
• Arkhipkin V.G. (Kirensky Inst Phys, Fed Res Ctr KSC SB RAS, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660079, Russia)
• Baturin I.S. (Ural Fed Univ, Sch Nat Sci & Math, Ekaterinburg 620000, Russia; Labfer Ltd, Ekaterinburg 620014, Russia)
• Akhmatkhanov A.R. (Ural Fed Univ, Sch Nat Sci & Math, Ekaterinburg 620000, Russia; Labfer Ltd, Ekaterinburg 620014, Russia)
• Shur V.Ya (Ural Fed Univ, Sch Nat Sci & Math, Ekaterinburg 620000, Russia; Labfer Ltd, Ekaterinburg 620014, Russia)
• Chirkin A.S. (Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia; Moscow MV Lomonosov State Univ, Int Laser Ctr, Moscow 119992, Russia)

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