Information processing apparatus using a semiconductor laser dio

Details Information processing apparatus using a semiconductor laser dio Information processing apparatus using a semiconductor laser dio

1981-03-27

1984-05-15

Hecker, Stuart N.

Static information storage and retrieval

Information masking

Transparency

365121, G11C 1308

Patent

active

044492049

ABSTRACT:
An optical information processing apparatus comprises an information recording medium, a semiconductor laser diode for issuing a laser beam and an optical system adapted to direct the issued laser beam from the semiconductor laser diode toward the information recording medium and then return the reflected laser beam from the medium to the diode and provided with means capable of rotating the plane of polarization of the reflected laser beam from the medium by 90.degree. relative to the plane of polarization of the issued laser beam.

REFERENCES:
patent: 3919698 (1975-11-01), Bricot et al.
patent: 4105926 (1978-08-01), Reno et al.
Fleisher et al., "Mechanisms for Reading a Standing Wave Memory Simultaneously and Independently", IBM Tech. Dics. Bull., vol. 6, No. 10, 3/64, pp. 108-109.
Buhrer et al., "Electrooptic Effect in Optically Active Crystals," Applied Optics, 4/64, vol. 3, No. 4, pp. 517-521.
Wireless World, "Without Doubt the Video Disc is not the end of the Story", 7/76, vol. 82, No. 1487, pp. 30-31,36.
Harris "Optical Memory Readout Apparatus", IBM Tech. Disc. Bul., vol. 7, No. 12, 5/65, p. 1199.
Rutz, "Integrated Mark Sensing Device", IBM Tech. Disc. Bul., vol. 9, No. 7, 12/66, p. 934.

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