Wave-mixing solitons in ferroelectric crystals

S. Bugaychuk, L. Kovács, G. Mandula, K. Polgár, R. A. Rupp

Research output: Contribution to journalArticle

Abstract

Although the sine-Gordon equation was originally obtained for the description of four-wave mixing in transmission geometry, it describes self-diffraction of the wave from shifted gratings as well. The sine-Gordon equation governs soliton propagation. The photoinduced amplitude of the refractive-index grating exhibits also a soliton shape in the crystal volume. The origin of this effect is the change of the contrast of light due to energy transfer between coupled waves during their propagation, which occurs in bulk crystals with strong photorefractive gain. The theoretical description shows the possibility to control the soliton properties by changing the input intensity ratio and/or input phase difference of the wave. The effect can lead to diffraction efficiency management, auto-oscillations and bistability of the output waves due to wave-mixing in ferroelectrics. Results on the first experimental observation of non-uniform distribution of the grating amplitude profile and its changes versus input intensity ratio are presented.

Original languageEnglish
Pages (from-to)995-1001
Number of pages7
JournalRadiation Effects and Defects in Solids
Volume157
Issue number6-12
DOIs
Publication statusPublished - 2002

Fingerprint

Solitons
Ferroelectric materials
solitary waves
Crystals
sine-Gordon equation
crystals
gratings
Diffraction efficiency
propagation
Four wave mixing
Diffraction gratings
diffraction
four-wave mixing
Energy transfer
Refractive index
Diffraction
energy transfer
refractivity
oscillations
Geometry

Keywords

  • Ferroelectric crystals
  • Four-wave mixing
  • Photorefractive effect
  • Solitons

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Radiation
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Wave-mixing solitons in ferroelectric crystals. / Bugaychuk, S.; Kovács, L.; Mandula, G.; Polgár, K.; Rupp, R. A.

In: Radiation Effects and Defects in Solids, Vol. 157, No. 6-12, 2002, p. 995-1001.

Research output: Contribution to journalArticle

Bugaychuk, S, Kovács, L, Mandula, G, Polgár, K & Rupp, RA 2002, 'Wave-mixing solitons in ferroelectric crystals', Radiation Effects and Defects in Solids, vol. 157, no. 6-12, pp. 995-1001. https://doi.org/10.1080/10420150215749
Bugaychuk, S. ; Kovács, L. ; Mandula, G. ; Polgár, K. ; Rupp, R. A. / Wave-mixing solitons in ferroelectric crystals. In: Radiation Effects and Defects in Solids. 2002 ; Vol. 157, No. 6-12. pp. 995-1001.
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