Optical parametric amplification by incoherent conical pump beam

V. Tamulienė, V. Smilgevičius, D. Kudarauskas, R. Butkus, A. Stabinis, A. Piskarskas


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.


optical parametric amplification; conical beams; incoherence

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DOI: https://doi.org/10.3952/physics.v57i1.3452


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