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Unformatted text preview: LINEAR » response of the vibrating dipole force (linear function of the displacement of the electrons)
• vibrating dipole ( induced dipole) : "!
!! # "!
$"! %" In a linear regime : linear relation between the displacement of the electrons
and the restoring force
Induced dipole frequency = time
applied EM field frequency
Induced Dipole Abrev. : EM field means Electromagnetic Field dipoles with frequencies =
N. Dubreuil - NONLINEAR OPTICS
A material with a collection of N dipoles in a linear
vibrating regime = LINEAR MEDIUM 1 and 2 10 3 Nonlinear opKcs Classical anharmonic oscillator model
- Two applied EM wave with frequencies 1 and : 2 NONLINEAR CASE : « NONLINEAR » dependence of the restoring force with the
displacement of the center of mass E p
time time Induced Dipole
Vibrating dipoles with frequencies = 1 and 2 + harmonics A material with a collection of N dipoles in a nonlinear
vibrating regime = NONLINEAR MEDIUM
11 N. Dubreuil - NONLINEAR OPTICS 7 Nonlinear opKcs • The e...
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- Spring '14