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Kvantovaya Elektronika, 2004, Volume 34, Number 10, Pages 933–940 (Mi qe2849)  

This article is cited in 4 scientific papers (total in 4 papers)

Nonlinear optical phenomena

Calculation of SHG in periodically poled crystals by specifying a spatially periodic dependence of the quadratic nonlinearity in a single-domain crystal

V. G. Dmitrieva, R. Singhb

a Polyus Research and Development Institute named after M. F. Stel'makh, Moscow
b Peoples Friendship University of Russia
Full-text PDF (191 kB) Citations (4)
Abstract: A method is developed for calculating SHG in linearly homogeneous periodically poled nonlinear crystals (PPNC) by specifying a spatially inhomogeneous periodic distribution of the quadratic-nonlinearity parameter in the form of a 'small-scale' elliptic sine, whose half-period forms one domain with the characteristic 'microplateau' of the nonlinearity parameter and interdomain walls. It is found that, because the domain length should be equal to the coherence length when the quasi-phase-matching condition is fulfilled, and if the coherence length is calculated in the fixed-field approximation, the dependence of the harmonic amplitude on the longitudinal coordinate has the form of a 'large-scale' elliptic sine with a broad 'macroplateau' corresponding to a certain (in the case of quasi-phase matching, to virtually 100%) transformation; however, the mismatch in a domain is never completely compensated by the reciprocal lattice vector. In this case, the phase trajectories inside one domain have the form of a sequence: an unstable focus, a limit cycle ('macroplateau'), a stable focus. This picture repeats in the next domain. It is shown that the width of the SHG phase-matching curve in a PPNC in the regime of strong energy exchange, taking secondary maxima into account, can be considerably (by several times) larger than the width calculated in the fixed-field approximation.
Received: 09.08.2004
English version:
Quantum Electronics, 2004, Volume 34, Issue 10, Pages 933–940
DOI: https://doi.org/10.1070/QE2004v034n10ABEH002849
Bibliographic databases:
Document Type: Article
PACS: 42.65.Ky, 42.70.Mp, 42.70.Qs
Language: Russian


Citation: V. G. Dmitriev, R. Singh, “Calculation of SHG in periodically poled crystals by specifying a spatially periodic dependence of the quadratic nonlinearity in a single-domain crystal”, Kvantovaya Elektronika, 34:10 (2004), 933–940 [Quantum Electron., 34:10 (2004), 933–940]
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  • https://www.mathnet.ru/eng/qe/v34/i10/p933
  • This publication is cited in the following 4 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
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