Optical Kerr Effect

The third-order nonlinearity can lead to an intensity-dependent refractive index known as the optical Kerr effect. With ω₂ = −ω₁, to
...... (1)
where E_av is the average electric field strength. The tensor χ⁽³⁾ describes the effect of an intense light beam upon the propagation path of the beam. The selfinduced effect manifests itself as an intensity-dependent contribution to the index of refraction
 ..........(2)
The effect of an intensity-dependent refractive index is exploited in Kerr lens mode-locking (KLM). In high-intensity beams the nonlinear refractive index can be the source of optical damage because it can lead to self-focusing and small-scale ripple growth.

مواضيع ذات صلة

Mirror reflections

The sensation of color

Physiochemistry of color vision

The mechanism of color vision

The chromaticity diagram

Measuring the color sensation

Color depends on intensity

Aberration

The ω,k four-vector

Moving sources

Anomalous refraction

The intensity of reflected light