Abstract.
A new mechanism for obtaining a nonlinear phase shift has been proposed and 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 on the relative phase of the waves that is introduced by the phase element. The calculated value of n2 eff exceeds that connected with cascaded quadratic nonlinearity, at the same conditions.
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Received: 1 November 1999 / Published online: 23 February 2000
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Drachev, V., Perminov, S. Nonlinear phase shift without cascaded second-order processes and third-order nonlinearity . Appl Phys B 71, 193–196 (2000). https://doi.org/10.1007/s003400000228
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DOI: https://doi.org/10.1007/s003400000228