Phase Conjugation by Four-Wave Mixing in a Waveguide

Shigeki Miyanaga, Hirofumi Fujiwara

R. W. Hellwarth

Theory and experiments are reviewed which suggest that optical-beam phase conjugation by four-wave mixing in a waveguide has the following advantages over four-wave mixing of unguided waves: (1 ) pump power requirements are reduced; (2) the pump beams can contain many transverse modes, both outside and inside the waveguide; (3) pump beam alignment is not critical; (4) the image-wave, being conjugated, can serve simultaneously as its own pump beam; (5) many frequencies can be conjugated simultaneously without intermixing of signals; and (6) frequency- and angle-response characteristics of the conjugator as an optical filter are extended. Frequency depen-dent resonances in the phase-conjugate signal may be employed in spectroscopy of small samples.

Henk F. Arnoldus, Thomas F. George

Bao Xue Chen, Shunsuke Kobayashi

A novel analytical consideration is presented for dealing with phase conjugation by degenerate four-TE wave mixing in a planar waveguide bounded by a nonlinear cladding, in which both phase-conjugate power coupling and intensity-dependent field distributions are discussed. New wave solutions for signal and phase-conjugation reflections are obtained with anomalous power-dependent field distributions, and are used to specific numerical example based on a nematic liquid crystal.

Michail G. Galushkin, Sergei A. Dimakov, R. N. Onoshko +2 more

S A Viznyuk, Pavel P Pashinin, Alexander M. Prokhorov +2 more