Y. R. Shen has written:

'The principles of nonlinear optics' -- subject(s): Nonlinear optics

D. C. Hanna has written:

'Nonlinear optics of free atoms and molecules' -- subject(s): Atoms, Molecules, Nonlinear optics

Vladimir M. Shalaev has written:

'Nonlinear Optics of Random Media' -- subject(s): Inhomogeneous materials, Nonlinear optics, Optical properties

Daniele Faccio has written:

'Conical waves, filaments and nonlinear optics' -- subject(s): Laser pulses, Ultrashort, Nonlinear optics, Ultrashort Laser pulses

It is the branch of optics that describes the behavior of light in nonlinear media.