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ELECTRON-BEAM-ADDRESSED TERNARY-STATE LIQUID CRYSTAL SPATIAL LIGHT MODULATOR

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 9991
Amount: $59,980.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1989
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
3 Preston Ct
Bedford, MA 01730
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Todd Tsakiris
 (617) 275-3100
Business Contact
Phone: () -
Research Institution
N/A
Abstract

AN ELECTRICALLY ADDRESSED SPATIAL LIGHT MODULATOR IS PROPOSED THAT IS CAPABLE OF IMPLEMENTING RECENTLY PROPOSED TERNARY PHASED-AMPLITUDE FILTERS FOR OPTICAL CORRELATOR SYSTEMS. BASED ON AN E-BEAM ADDRESSED LIQUID CRYSTAL FABRY-PEROT CELL, THE E-TLCM (ELECTRICALLY ADDRESSED TERNARY LIQUID CRYSTAL MODULATOR) PROVIDES THREE AMPLITUDE MODULATION STATES: -1, 0, AND +1. THE ADDITION OF A THIRD STATE,THE O STATE, IMPROVES CORRELATION PERFORMANCE IN MANY SITUATIONS BY ALLOWING ATTENUATION OF HIGH NOISE ENERGY FREQUENCIES. THE E-TLCM IS CONTROLLED FROM A PERSONAL COMPUTER AND CAN SERVE AS A FAST, PROGRAMMABLE FOURIER FILTER IN AN OPTICAL CORRELATOR. AN INNOVATIVE FEATURE OF THE DESIGN IS THE INCORPORATION OF A HIGH RESOLUTION CHARGE-TRANSFER PLATE (CTP) TO TRANSFER CHARGE FROM THE INTERIOR TO THE EXTERIOR OF AN EVACUATED ELECTRON-GUN ASSEMBLY. THE CTP IS INTEGRAL WITH THE LIQUID-CRYSTAL CELL AND SERVES AN AN ELECTRODE ARRAY FOR ESTABLISHING E-FIELD DISTRIBUTIONS ACROSS THE LIQUID CRYSTAL. PERFORMANCE CHARACTERISTICS OF THE E-TLCM TO BE INVESTIGATED INCLUDE: SPATIAL RESOLUTION, FRAMING SPEED, CONTRAST RATIO, AND SPATIAL UNIFORMITY.

* Information listed above is at the time of submission. *

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