Light controlled spatial and angular electromagnetic wave modula

Optical: systems and elements – Holographic system or element – Having particular recording medium

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

REFERENCES:
patent: 3388396 (1968-06-01), Rope et al.
patent: 3914056 (1975-10-01), Mottier et al.
patent: 4190811 (1980-02-01), Alcock et al.
patent: 4773739 (1988-09-01), Valley et al.
patent: 4898436 (1990-02-01), Cheng et al.
patent: 4913534 (1990-04-01), Lafleur et al.
patent: 4948212 (1990-08-01), Cheng et al.
patent: 4973154 (1990-11-01), McMichael et al.
patent: 5004325 (1991-04-01), Glass et al.
patent: 5018852 (1991-05-01), Cheng et al.
patent: 5044726 (1991-09-01), Grego
patent: 5097357 (1992-03-01), Ranganathan et al.
patent: 5131748 (1992-07-01), Monchalin et al.
patent: 5150228 (1992-09-01), Liu et al.
Saleh et al., "Fundamentals of Photonics," John Wiley and Sons, Inc., New York, 1991, pp. 550 and 758.
Shih et al., "Photo-Induced Complex Permittivity Measurements of Semiconductors," SPIE vol. 477 Optical Technology for Microwave Applications, 1984, pp. 94 to 100.
Vasey et al., "Electro-Optic AlGaAs Spatial Light Deflector/Modulator Based on a Grating Phased Array," Appl. Phys. Lett., vol. 58, No. 25, Jun. 24, 1991, pp. 2874 to 2876.
Cheng et al., "Optically Activated Integrated Optic Mach-Zehnder Interferometer on GaAs," Appl. Phys. Lett., vol. 59, No. 18, Oct. 28 1991, pp. 2222 to 2224.
Bennett et al., "Carrier-Induced Change in Refractive Index of InP, GaAs, and InGaAsP," 26 IEEE J. Quan. Elec. 113 to 122, 1990.
A. Yariv, "Phase Conjugate Optics and Real-Time Holography," IEEE Journal of Quantum Electronics, vol. QE-14, No. 9, Sep. 1978, pp. 650 to 660.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Light controlled spatial and angular electromagnetic wave modula does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light controlled spatial and angular electromagnetic wave modula, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light controlled spatial and angular electromagnetic wave modula will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-24405

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.