Summary form only given. In this paper, we revisit the theory and practice of laser induced orientational scattering, in which a polarized 'pump' laser is converted into its orthogonal polarization component by two-beam coupling effects between the 'pump' and its scattered noise. We consider the case of an extraordinarily polarized laser incident on a planar nematic film with the optical electric field parallel to the director axis. We demonstrate the feasibility of an all-optical polarization conversion process using a cw 1.55 /spl mu/m laser, to our knowledge for the first time. The liquid crystal used is pure E-7 (EM Chemicals), which has a nematic-isotropic phase transition temperature of 60.5/spl deg/C. The laser used is an erbium doped fiber laser capable of 2 W unpolarized output.


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    Title :

    High efficiency all-optical polarization conversion of cw 1.55 /spl mu/m lasers with liquid crystals by nonresonant optical wave mixing


    Contributors:
    Khoo, I.C. (author) / Ding, J. (author) / Chen, K. (author) / Diaz, A. (author)


    Publication date :

    2002-01-01


    Size :

    127752 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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