Non-destructive 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 tetrabenzoporphine 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 gating 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 time and with high intensity practically without destroying the contrast of the recorded information.