Optical: systems and elements – Holographic system or element – Having particular recording medium
Patent
1992-01-09
1994-04-19
Lerner, Martin
Optical: systems and elements
Holographic system or element
Having particular recording medium
356347, 356349, 359 7, 359 21, 359299, 359350, G02F 103, G02F 129, G03H 500, G03H 100
Patent
active
053051238
ABSTRACT:
A 2D/3D optically controlled spatial and angular electromagnetic wave modulator is disclosed. The modulator of the present invention modulates the amplitude and direction of an electromagnetic wave such as millimeter microwaves or infrared waves by diffracting or scattering the electromagnetic wave from a semiconductor material upon which is incident a controlling lightwave. The lightwave incident upon the semiconductor is of varying intensity, and may be time varying, and changes the complex refractive permittivity of the semiconductor material. The electromagnetic wave is thus modulated in accordance with the controlling lightwave.
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Jannson Tomasz P.
Manasson Vladimir
Sadovnik Lev S.
Lerner Martin
Physical Optics Corporation
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