D. Dirksen et al., ENHANCEMENT OF HOLOGRAPHIC GRATINGS BY EXTERNAL ELECTRIC-FIELDS IN PHOTOREFRACTIVE BTVO CRYSTALS DURING RECONSTRUCTION, Physica status solidi. a, Applied research, 153(2), 1996, pp. 547-551
Reconstruction of elementary holograms recorded in photorefractive BTV
O (Bi12Ti0.76V0.24O20) crystals is investigated. A non-exponential dec
ay behavior presumably caused by superposition of at least two grating
s with different time constants is observed. By applying external elec
tric de fields an a posteriori control of the diffracted intensity dur
ing reconstruction is achieved.