Nondegenerate two-wave interaction in a photorefractive crystal in an external detecting field.
A hologram recording mechanism in photorefractive Bi(12)TiO(20) crystal by different-frequency laser beams in an ac field is studied. The frequency difference between the beams is essentially more than the reverse of the response time of the hologram.
Ilinykh
P N
PN
Nestiorkin
O P
OP
Zel'dovich
B Y
BY