Characterization of an LCD for Use as a Programmable Phase Shifter to Produce a Single-Lobed Far-Field Pattern in a Phased Array

Author

Gregory S. Kenyon

Date of Award

12-1993

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Engineering Physics

First Advisor

Won B. Roh, PhD

Abstract

The liquid crystal display LCD from an inexpensive pocket television was converted to a spatial light modulator SLM for the purpose of altering the phase front of a ten element diode laser array to produce a single lobe far field pattern. Characterization of the SLM determined the amount of phase shift, amplitude modulation and polarization rotation properties. Nonuniformities within the phase shifter and insufficient phase shift prevented the formation of a single lobe. However, a very limited phase grating was created and analyzed. LCDs from inexpensive commercial pocket televisions were found unsuitable for use as phase shifting spatial light modulators.

AFIT Designator

AFIT-GAP-ENP-93D-05

DTIC Accession Number

ADA273883

Comments

The author's Vita page is omitted.

Recommended Citation

Kenyon, Gregory S., "Characterization of an LCD for Use as a Programmable Phase Shifter to Produce a Single-Lobed Far-Field Pattern in a Phased Array" (1993). Theses and Dissertations. 6644.
https://scholar.afit.edu/etd/6644