NONDESTRUCTIVE READOUT OF PICOSECOND TIME-AND-SPACE-DOMAIN HOLOGRAMS RECORDED BY PHOTON-GATED SPECTRAL HOLE-BURNING

Two-color photon-gated persistent spectral hole burning in zink tetrab enzoporphine with a solid halocarbon additive 1,1-bis(4-chlorophenyl)- 2,2,2-trichloroethane in polystyrene film at liquid-helium temperature has been used for recording of picosecond photochemically accumulated stimulated photon echo (PASPE) holograms. In the presence of the gati ng illumination at 532 nm the hole-burning yield increased by a factor of up to 100. With the gating illumination switched off we were able to read out the recorded time-and-space-domain holograms for a long ti me and with high intensity practically without destroying the contrast of the recorded information.