Keywords: optical parametric amplification, conical beams, incoherence
PACS: 42.65.-k, 42.65.Yj, 42.25.Kb

Viktorija Tamulienė, Valerijus Smilgevičius, Domas Kudarauskas, Rytis Butkus, Algirdas Stabinis, Algis Piskarskas
Vilniaus universiteto Kvantinės elektronikos katedra, Vilnius, Lietuva

Pademonstruotas erdviškai koherentinio šviesos pluošto parametrinis stiprinimas kaupinant jį erdviškai nekoherentiniu kūginiu pluoštu. Nustatytos sąlygos, kada stiprinamo pluošto kampinis spektras lieka nepakitęs. Tada stiprinimas vyksta pagal eksponentinį dėsnį ir kaupinimo pluoštas veikia kaip plokščia banga.
Gautas geras teorinių ir eksperimentinių rezultatų sutapimas.

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