A compact magneto-optic pickup device is required to realize magneto-optic disc systems of low cost and fast access. The key is a microminiaturized polarization component. We investigated the optimum fabrication conditions in the resonance domain for S-polarized light using electron-beam direct-writing and the liftoff method, and realized a low-loss wire-grid polarizer of Ts=80 % and Ts/Tp=30, and a high extinction ratio wire-grid polarizer of Ts=54 % and Ts/Tp=1000, for a wavelength of 0.78 /spl mu/m and a period of 0.39 /spl mu/m. These are the best values for wire-grid polarizers in the 0.8 /spl mu/m wavelength band so far reported. We studied the feasibility of using this device for polarization detection in magneto-optic disc systems by measuring the carrier-to-noise ratio (C/N).


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    Title :

    Aluminum-wire grid polarizer for a compact magneto-optic pickup device


    Contributors:
    Tamada, H. (author) / Yamaguchi, T. (author) / Doumuki, T. (author) / Matsumoto, S. (author) / Nemoto, K. (author) / Narui, H. (author) / Nakao, T. (author) / Matsuda, O. (author)


    Publication date :

    1997-01-01


    Size :

    156003 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Aluminum-Wire Grid Polarizer For A Compact Magneto-Optic Pickup Device

    IEEE; Lasers and Electro-Optics Society / Optical Society of America / SPIE- The International Society for Optical Engineering | British Library Conference Proceedings | 1997



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