The basic physical mechanisms of amplitude, frequency (phase) and polarisation
nonreciprocities in ring lasers are considered. These effects have to be taken into account …

According to optical absorption spectra the width of the forbidden band of nominally pure
congruent and stoichiometric lithium niobate crystals, as well as a series of congruent …

It is shown experimentally that a weak optical signal in a Nd: YAG amplifier can have an
extraordinarily large gain that is due to transient coherent nonlinear interaction with a strong …

Theoretical and experimental studies of the interaction of two counterpropagating light
waves on dynamic reflection gratings formed in the Denisyuk scheme in cubic …

A method of phase locking of optically coupled lasers by gain gratings in an active medium
is proposed. The criterion for phase locking is determined and optimal relations between the …

The regularities of stationary degenerate four-wave mixing by transmission holographic
gratings formed in a Bi12TiO20 crystal of (110)-cut are analyzed. A system of differential …

The interaction of two counterpropagating light waves on reflection holographic gratings is
studied in cubic photorefractive crystals with the natural optical activity. The anisotropy of …

A nonlinear growth of the light scattering intensity has been observed and the frequency shift
of the spectral line of scattered light has been measured in light backscattered in …

The evolution of the theoretical and experimental background for a photorefractive effect in
cubic gyrotropic piezocrystals is reviewed. It is shown that the impact of the inverse …

Volume holograms have high angular and spectral selectivity and diffraction efficiency (DE)
up to 100%. Media for recording volumetric holograms must have high resolution, high …