[PDF]    http://dx.doi.org/10.3952/lithjphys.47405

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 47, 403–410 (2007)


EFFICIENT FOUR-WAVE PARAMETRIC AMPLIFICATION AND SPATIAL SOLITON GENERATION IN TRANSPARENT ISOTROPIC MEDIUM WITH KERR NONLINEARITY*
H. Valtnaa,b, A. Dubietisa, G. Tamošauskasa, P. Polesanaa,c, J. Galinisa, D. Majusa, G. Valiulisa, D. Faccioc, P. Di Trapania, and A. Piskarskasa
aDepartment of Quantum Electronics, Vilnius University, Saulėtekio 9, LT-10222 Vilnius, Lithuania
E-mail: audrius.dubietis@ff.vu.lt
bUniversity of Tartu, Institute of Physics, Riia 142, EE-51014 Tartu, Estonia
cDipartimento di Fisica Università dell’Insubria, via Vallegio 11, IT-22100 Como, Italy

Received 19 June 2007; revised 5 October 2007; accepted 21 November 2007

We report on highly efficient four-wave optical parametric amplification transparent bulk Kerr medium (water) under high intensity elliptical beam pumping. Energy conversion from pump to parametric waves as high as 25% is obtained owing to the achievement of 1-dimensional spatial soliton regime in noncollinear phase matching configuration, and hence guaranteeing high intensity over a large interaction length, high beam quality, and excellent operational characteristics.
Keywords: self-focusing, solitons, optical parametric amplification, four-wave mixing
PACS: 42.65.Jx, 42.65.Tg, 42.65.Yj
*The report presented at the 37th Lithuanian National Physics Conference, 11–13 June 2007, Vilnius, Lithuania.


EFEKTYVUS KETURBANGIS PARAMETRINIS ŠVIESOS STIPRINIMAS IR ERDVINIŲ SOLITONŲ GENERACIJA SKAIDRIOJE IZOTROPINĖJE TERPĖJE SU KERR’O NETIESIŠKUMU
H. Valtnaa,b, A. Dubietisa, G. Tamošauskasa, P. Polesanaa,c, J. Galinisa, D. Majusa, G. Valiulisa, D. Faccioc, P. Di Trapania, A. Piskarskasa
aVilniaus universiteto Fizikos fakultetas, Vilnius, Lietuva
bTartu universitetas, Tartu, Estija
cInsubrijos universitetas, Como, Italija

Pademonstruotas didelio efektyvumo keturbangis parametrinis šviesos stiprinimas skaidrioje izotropinėje terpėje su Kerro netiesiškumu (vandenyje), kaupinant eliptiniais šviesos pluoštais. Gautas energinis keitimas iš kaupinimo į parametrines bangas yra 25 %. Tokios sąveikos metu realizuotas vienmačių erdvinių solitonų režimas, įgalinęs užtikrinti nekolinearų fazinį sinchronizmą, didelį kaupinimo intensyvumą dideliame sąveikos ilgyje, o taip pat aukštas spinduliuotės laikines ir erdvines charakteristikas.


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