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    http://dx.doi.org/10.3952/lithjphys.48305
    
    Open access article / Atviros prieigos straipsnis
    
    Lith. J. Phys. 48, 225–229 (2008)
    
    
    ANOMALOUS DIFFRACTION OF IDLER
        BEAM GENERATED IN OPTICAL PARAMETRIC AMPLIFIER
      Algirdas Stabinis, Viktorija Pyragaitė, and Sergei Orlov
      Department of Quantum Electronics, Vilnius University,
        Saulėtekio 9, LT-10222 Vilnius, Lithuania
      E-mail: viktorija.pyragaite@ff.vu.lt
    
    
    Received 18 June 2008; accepted 18
      September 2008
    
    
    The diffraction of idler beam
      generated in optical parametric amplifier operating at low
      parametric gain is analysed. It is revealed that diffraction
      properties of idler beam under propagation in the free space is
      significantly different in comparison with the properties of
      Gaussian beam.
    
    Keywords: nonlinear optics, diffraction,
      optical parametric amplifier
    
    PACS: 42.60.Jf, 42.65.-k, 42.65.Yj
    
    
    ANOMALI ŠALUTINĖS BANGOS,
        GENERUOJAMOS OPTINIAME PARAMETRINIAME STIPRINTUVE, DIFRAKCIJA
      Algirdas Stabinis, Viktorija Pyragaitė, Sergei Orlov
      Vilniaus universitetas, Vilnius, Lietuva
      
    
    Išanalizuota anomali šalutinės bangos,
      generuojamos optiniame parametriniame stiprintuve, difrakcija mažo
      stiprinimo atveju. Parodyta, kad šalutinės bangos, sklindančios
      laisvoje erdvėje, difrakcinės savybės esmingai skiriasi nuo Gauso
      pluoštui būdingų savybių
    
    
      
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