… /2 with respect to the incident fringe pattern; this allows an … beam coupling between the
two recording beams. The dependence of the gain r versus the incident beam ratio (J of the two …

… In this article we have studied the steady-state twobeam coupling phenomenon in the
photorefractive Bil 2SiOz0 crystal when the grating is induced through the diffusion of …

… Beam coupling equations in a dynamic recording medium The purpose of this section is to
analyse the beam coupling effect and related energy transfer in a dynamic medium when the …

… beam coupling coefficient over a given interaction region. Previous discussions of beam
coupling … of optical activity on two beam coupling in optically active photorefractive materials is …

… exchange between overlapping 5IS-nm beams (ie, "beam coupling") and of the decays …
on beam coupling, grating erasure, the spontaneous decay of photorefractive gratings in the …

… the erase beam was aligned at the Bragg angle. This indicated that the effects of beam coupling
… experimental expediency dictated we employ erase beams at the Bragg angle. This was …

… ; the experimental results in GaAs have also been reported.2 Here we present ex perimental
studies of polarization-flip two-beam coupling in photorefractive BSO using Ar+ laser beams…

… We study the polarization properties of volume phase gratings induced in photorefractive
materials that are both optically active and linearly birefringent, such as Bi 12 SiO 20 , Bi 12 …

… photorefractive Bi 12 SiO 20 crystal by using the dispersive phase coupling effect in a
nondegenerate two-… coupling beam, the incident intensity, and the externally applied electric …

… beam coupling with the net gain of 4000 under an external alternating electric field was
observed in a Bi12SiO20 crystal … of the sillenite crystals [2], our Bi12SiO20 crystals were grown in …