Holographic polarization sensor for magneto-optic heads

Tae-Jin Kim; Chien-Wei Han; Raymond K. Kostuk

doi:10.1117/12.172637

1 May 1994 Holographic polarization sensor for magneto-optic heads

Tae-Jin Kim, Chien-Wei Han, Raymond K. Kostuk

Proceedings Volume 2176, Practical Holography VIII; (1994) https://doi.org/10.1117/12.172637
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

Abstract

Magneto-optic data storage is an emerging read/write storage technology with many potential applications in consumer computer systems. One of the limitations to this development is the cost of the read/write head. This device must provide high optical power during the write phase, and sense a small change in the polarization of the beam reflected from an MO disk during the read operation. Typically the head consists of many individual optical components which must be aligned and accurately assembled, and contributes significantly to system cost. Two important elements in the head are a leaky beamsplitter and a polarization beamsplitter. In this presentation we discuss the design parameters and performance characteristics for these beamsplitters formed in dichromated gelatin. Experimental grating performance is also given.

Citation Download Citation

Tae-Jin Kim, Chien-Wei Han, and Raymond K. Kostuk "Holographic polarization sensor for magneto-optic heads", Proc. SPIE 2176, Practical Holography VIII, (1 May 1994); https://doi.org/10.1117/12.172637

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