Nonlinear Raman-Nath diffraction of femtosecond laser pulses in a 2D nonlinear photonic crystal

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1364/OL.40.004002

Ключевые слова: Diffraction, Harmonic generation, Laser pulses, Nonlinear optics, Photonic crystals, Ultrafast lasers, Analytical expressions, Angular positions, Enhancement factor, High frequency HF, Nonlinear photonic crystals, Propagation direction, Raman - Nath diffractions, Two-dimensional nonlinear photonic crystal, Ultrashort pulses

Аннотация: We study second-harmonic generation (SHG) of femtosecond laser pulses in a rectangular two-dimensional nonlinear photonic crystal (NLPC). Multiple SH beams were observed in the vicinity of the propagation direction of the fundamental beam. It has been verified that the angular positions of these beams obey the conditions of nonlinear Raman-Nath diffraction (NRND). The measured SH spectra of specific NRND orders consist of narrow peaks that experience a high-frequency spectral shift as the order grows. We derive an analytical expression for the process studied and find the theoretical results to be in good agreement with the experimental data. We estimate the enhancement factor of nonlinear Raman-Nath diffraction in 2D NLPC to be 70. (C) 2015 Optical Society of America

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Издание

Журнал: OPTICS LETTERS

Выпуск журнала: Vol. 40, Is. 17

Номера страниц: 4002-4005

ISSN журнала: 01469592

Место издания: WASHINGTON

Издатель: OPTICAL SOC AMER

Авторы

  • Vyunishev A.M. (LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia)
  • Arkhipkin V.G. (LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Lab Nonlinear Opt & Spect, Krasnoyarsk 660079, Russia)
  • Slabko V.V. (Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia)
  • Baturin I.S. (Ural Fed Univ, Ekaterinburg 620000, Russia; Labfer Ltd, Ekaterinburg 620014, Russia)
  • Akhmatkhanov A.R. (Ural Fed Univ, Ekaterinburg 620000, Russia; Labfer Ltd, Ekaterinburg 620014, Russia)
  • Shur V.Ya. (Ural Fed Univ, 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, Ctr Int Laser, Moscow 119992, Russia)

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