The branch of
optics that describes the behaviour of
light in
nonlinear media, that is, media in which the
polarisation P responds nonlinearly to the [electric field]
? E of the light.
Nonlinear optics gives rise to a host of optical phenomena:
- Second harmonic generation (SHG)
- Third harmonic generation (THG)
- Parametric frequency mixing and amplification
- Phase conjugation
- Pockel's effect
- Acousto-optics
- Kerr effect (intensity dependent refractive index)
- Self focusing
- Self phase modulation (SPM)
- Brillouin scattering
- Raman scattering
(work in progress) - DrBob
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