Nonlinear phase shift without cascaded second-order processes and third order nonlinearity

Details Nonlinear phase shift without cascaded second-order processes and third order nonlinearity Nonlinear phase shift without cascaded second-order processes and third order nonlinearity

1998-06-25

arxiv.org/abs/physics/9806043v1

Applied Physics B 71 (2000) 2, 193-196

Physics

Optics

6 pages LaTeX 2.09 + 3 PS figures

Scientific paper

The new mechanism for obtaining a nonlinear phase shift has been proposed and the schemes are described for its implementation. As it is shown, the interference of two waves with intensity-dependent amplitude ratio coming from the second harmonic generation should produce the nonlinear phase shift. The sign and amount of nonlinear distortion of a beam wavefront is dependent of the relative phase of the waves that is introduced by the phase element. Calculated value of $n_2^{eff}$ exceeds that connected with cascaded quadratic nonlinearity, at the same conditions.

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