Electron accepters of the fluorene series in photothermoplastic storage media for holography

Photoconductive thin (1.2 mum) poly-N-(2,3-epoxypropyl)carbazole (PEPK) fil ms sensitised by electron accepters of the fluorene series (2-15w%) have be en used in photothermoplastic storage media (PTSM) for hologram recording i n real-time scale. Using accepters 2 and 3, very efficient PTSM were obtain ed: wide spectral region of a response (400-800 nm), holographic response S -eta = 6-120 m(2) J(-1) (He-Ne laser), diffraction efficiency eta (max) = 2 0-27% for planar light wave holograms, dynamic interval of hologram recordi ng I-ref/I-ob approximate to 10(3)-10(4) (without amplification). These PTS M are also suitable for rainbow hologram recording.