Zobrazeno 1 - 10
of 22
pro vyhledávání: '"V. V. Ivakhnik"'
Publikováno v:
Компьютерная оптика, Vol 45, Iss 5, Pp 667-672 (2021)
Quality of radiation conversion under four-wave mixing on thermal nonlinearity with feedback for both signal and object waves has been investigated at high reflection coefficients. It has been shown that the optimal operating mode of a four-wave conv
Autor:
M. V. Savelyev, V. V. Ivakhnik
Publikováno v:
Radiophysics and Quantum Electronics. 63:625-633
We analyze spatial characteristics of the four-wave radiation converter in a two-component medium consisting of a transparent liquid and nanoparticles with allowance for the gravity force. It is shown that allowing for the gravity force acting on nan
Autor:
M. V. Savelyev, V. V. Ivakhnik
Publikováno v:
Компьютерная оптика, Vol 42, Iss 2, Pp 227-235 (2018)
We analyze changes in the spatial structure of an object wave under four-wave mixing in a transparent two-component medium in schemes with opposing and concurrent pump waves. It is shown that in the spatial spectrum of the object wave there is a dip,
Autor:
V. I. Nikonov, V. V. Ivakhnik
Publikováno v:
Computer Optics. 41:315-321
The spatial selectivity of a six-wave radiation converter w1 + w1 + w2 – w1 – w1 = w2 on thermal nonlinearity with allowance for the nonlinear absorption coefficient was studied. Relationships for the half-bandwidths of the spatial frequencies of
Autor:
M. V. Savelyev, V. V. Ivakhnik
Publikováno v:
Computer Optics. 40:322-330
Spatial characteristics of the degenerate four-wave radiation converter in a liquid containing nanoparticles were studied using a scheme with concurrent pump waves. The phase matching condition was shown to determine the general form of the spatial s
Autor:
V. V. Ivakhnik, M. V. Savelyev
Publikováno v:
Computer Optics. 40:19-25
The spatial selectivity of the degenerate four-wave radiation converter in a transparent two-component medium based on the electrostriction and Dufour effect has been analyzed as a function of the rotation and divergence of pump waves. Expressions co
Autor:
V. V. Ivakhnik, M. V. Savelyev
Publikováno v:
Physics Procedia. 73:26-32
We analyze the quality of wave front reversal for the four-wave converter in optically transparent two-component medium in the approximation of large reflectance. We obtain the dependences of the reflectance and the spatial spectrum half-width of the
Publikováno v:
Optics and Spectroscopy. 115:384-390
The dependences of the reflection (transmission) coefficients and the half-width of the spatial frequency band on the pump-wave intensity are obtained for an object (signal) wave in degenerate and quasi-degenerate four-wave mixers on resonant and the
Publikováno v:
Computer Optics. 37:25-30
An expression for the time response of degenerate four-wave radiation converter on thermal nonlinearity has been obtained for the scheme with codirectional pumping waves with undepleted pump approximation. The time dependence of spatial spectrum of o
Autor:
V. V. Ivakhnik, V. I. Nikonov
Publikováno v:
Optics and Spectroscopy. 94:124-128
Spatial resolution of a dynamic hologram in a reversible photochromic medium is analyzed, with allowance made for diffusion of photochromic particles. It is shown that the bandwidth of spatial frequencies of a thin hologram decreases over time, appro