[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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