Synthesis and optical storage properties of a thiophene-based holographic recording

Avtar Matharu, S. Jeeva, P.R. Huddleston, P.S. Ramanujam

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The results of the fabrication and optical data storage characteristics of a novel azothiophene polyester 9 for potential holographic storage are reported. The polyester is derived from an azothiophene diol 1 and diphenyl phthalate 8 via in vacuo melt transesterification. Inclusion of a 5-methoxy-2-thienyl moiety generates a trans pi-pi* transition centered close to 405 nm. An investigation of the optical data storage characteristics of a solution cast film of azopolyester with a thickness of 65 mm is summarised. The optical anisotropy induced by a 532 nm frequency doubled YAG laser and probed at a wavelength of 633 nm outside the absorption band with a polarimeter reveals a very high induced anisotropy of 7 rad ( laser intensity, 250 mW cm(-2)). The calculated birefringence of the film is 0.02 per micron. Maximum anisotropy is reached after approximately 70 s of irradiation. The induced anisotropy disappears at approximately 90 degrees C. Room temperature stable gratings can be inscribed with high diffraction efficiency.
    Original languageEnglish
    JournalJournal of Materials Chemistry
    Volume17
    Issue number42
    Pages (from-to)4477-4482
    ISSN0959-9428
    DOIs
    Publication statusPublished - 2007

    Fingerprint Dive into the research topics of 'Synthesis and optical storage properties of a thiophene-based holographic recording'. Together they form a unique fingerprint.

    Cite this