Optical parametric amplification by incoherent conical pump beam

  • V. Tamulienė
  • V. Smilgevičius
  • D. Kudarauskas
  • R. Butkus
  • A. Stabinis
  • A. Piskarskas
Keywords: optical parametric amplification, conical beams, incoherence


Optical parametric amplification of an input narrowband signal beam in the field of a spatially incoherent conical pump is investigated. Two amplification regimes – onset and exponential – are distinguished. The possibility to amplify the signal beam significantly and obtain a smooth intensity profile at the output is revealed. It is shown that the incoherent conical beam may act on the signal beam as a plane wave. Good agreement of theoretical and experimental data is obtained.
Nonlinear and Coherent Optics