Results 31 to 40 of about 358,541 (195)
, 2012 We provide a general decomposition of the two-photon state produced by spontaneous parametric down-conversion in Hermite-Gaussian modes, in the case that the pump beam is described by a Hermite-Gaussian beam of any order.
A H Pimentel +7 more
core +1 more source
Journal of Manufacturing and Materials Processing, 2023 The commonly used Gaussian intensity distribution during the laser-based processing of metals can negatively affect melt pool stability, which might lead to defects such as porosity, hot cracking, or poor surface quality.
Florian Nahr +3 more
doaj +1 more source
Non-diffracting Optical Beams in a Three-level Raman System
, 2011 Diffractionless propagation of optical beams through atomic vapors is investigated. The atoms in the vapor are operated in a three-level Raman configuration.
B. A. A. Saleh +4 more
core +1 more source
Effect of a thin optical Kerr medium on a Laguerre-Gaussian beam
, 2007 Using a generalized Gaussian beam decomposition method we determine the propagation of a Laguerre-Gaussian beam that has passed through a thin nonlinear optical Kerr medium.
Kuzyk, Mark G., Zhang, Weiya
core +1 more source
Nonlinear unbalanced Bessel beams in the collapse of Gaussian beams arrested by nonlinear losses [PDF]
, 2008 Collapse of a Gaussian beam in self-focusing Kerr media arrested by nonlinear losses may lead to the spontaneous formation of a quasi-stationary nonlinear unbalanced Bessel beam with finite energy, which can propagate without significant distortion over ...
Alberto Parola +6 more
core +3 more sources
Spin to orbital angular momentum transfer in frequency up-conversion
Nanophotonics, 2021 We demonstrate the spin to orbital angular momentum transfer in frequency upconversion with structured light beams. A vector vortex is coupled to a circularly polarized Gaussian beam in noncollinear second harmonic generation under type-II phase match ...
Pinheiro da Silva Braian +5 more
doaj +1 more source
Optical limiting using Laguerre-Gaussian beams
, 2007 We demonstrate optical limiting using the self-lensing effect of a higher-order Laguerre-Gaussian beam in a thin dye-doped polymer sample, which we find is consistent with our model using Gaussian decomposition.
Chen, Fang +9 more
core +1 more source
Optical realization of nonlinear quantum dynamics
, 2014 In a cavity filled with a Kerr medium it is possible to generate the superposition of coherent states, i.e. Schroodinger cat states may be realized in this system.
Arrizon, V. +3 more
core +1 more source
All-optical mode conversion via spatially multimode four-wave mixing
New Journal of Physics, 2016 We experimentally demonstrate the conversion of a Gaussian beam to an approximate Bessel–Gauss mode by making use of a non-collinear four-wave mixing (4WM) process in hot atomic vapor.
Onur Danaci +2 more
doaj +1 more source
, 2007 A unified description of the free-space cylindrical vector beams is presented, which is an integral transformation solution to the vector Helmholtz equation and the transversality condition.
Ashkin +20 more
core +1 more source