Results 251 to 260 of about 48,803 (304)

Laser diagnostics and minor species detection in combustion using resonant four-wave mixing [PDF]

open access: yesProgress in Energy and Combustion Science, 2011
Peer ...
Johannes Kiefer, P Ewart
exaly   +2 more sources

Solitons and four-wave mixing

Physical Review A, 1986
We develop the formalism for studying transient four-wave-mixing phenomena in a Raman medium, and apply it to the study of solitary-wave propagation. We consider the problems of second-Stokes generation, anti-Stokes scattering, and two-pump Raman scattering.
, Ackerhalt, , Milonni
openaire   +2 more sources

Four-wave-mixing interferometer

Optics Letters, 1996
We have developed a new method of determining in time both the real and the imaginary parts of third-order nonlinear-optical coefficients. In this method the phase-conjugated four-wave-mixing signal beam interferes with one of the transmitted pump beams.
N, Tang, J P, Partanen
openaire   +2 more sources

Symmetries of photorefractive four-wave mixing

Physical Review A, 1992
A symmetry analysis of degenerate four-wave-mixing equations in photorefractive crystals is carried out. Using underlying SU symmetries, a systematic derivation of conserved quantities is performed, and a method of integration of the equations is introduced.
, Stojkov, , Belic
openaire   +2 more sources

Degenerate four-wave mixing in plasmas

Optics Letters, 1979
We report an analysis of degenerate four-wave mixing in uniform plasmas and show that the magnitude of the third-order susceptibility (varying as lambda(2)) can be comparable to (10(-11) esu for lambda = 10.6 microm) or orders of magnitude larger (10(-3) esu for lambda= 10 cm) than the corresponding susceptibility in typical nonlinear materials.
D G, Steel, J F, Lam
openaire   +2 more sources

Entanglement in a four-wave mixing process

Optics Letters, 2017
We investigate different kinds of entanglement in a four-wave mixing process with a degenerate pump. After analyses on means and quantum fluctuations of the three output beams (Stokes, anti-Stokes, and pump), we verify the existence of genuine tripartite entanglement, and quantify bipartite, two-mode, as well as tripartite entanglement with the ...
Zhan, Zheng   +3 more
openaire   +2 more sources

Four-wave mixing with femtosecond pulses

Physica Scripta, 2009
The recent development of noncollinear optical parametric amplifiers (NOPAs) has equipped many laboratories with widely tunable, spectrally broad ultrashort laser pulses with a duration of 15-30 fs. The present work deals with sub-20 fs pulsed degenerate four wave mixing (DFWM) on high-frequency vibrational levels in all-trans-beta-carotene.
openaire   +3 more sources

Polariton effects in four-wave mixing

Physical Review B, 1994
We show that polariton effects lead to time-delayed components in the time-resolved four-wave-mixing (FWM) signal. Hence we find that recent observations in FWM experiments that have been ascribed to many-body Coulomb interactions can also be explained from the formation of exciton polaritons.
, Bakker, , Kurz
openaire   +2 more sources

Squeezing in nondegenerate four-wave mixing

Physical Review A, 1986
Ways to minimize spontaneous-emission noise due to quantum fluctuations in the medium are a major consideration in experiments designed to produce squeezed states of light. Motivated by the recent experiments of Slusher et al. we present a fully quantized model of nondegenerate four-wave mixing. We show that the spontaneous-emission noise, important at
Reid, M. D., Walls, D. F.
openaire   +3 more sources

Four-wave mixing in microstructure fiber

Optics Letters, 2001
We report what we believe to be the first experimental demonstration of nondegenerate four-wave mixing in a microstructure fiber. The effect of the chi((3)) nonlinearity is enhanced in such a fiber because of the small core area, and we achieve phase matching by operating near the zero-dispersion wavelength (?750 nm) . We have observed parametric gains
J E, Sharping   +4 more
openaire   +2 more sources

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