Date of Award

Fall 1989

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)

Department

Electrical Engineering and Computer Science

First Advisor

Ishii, T. K.

Second Advisor

Heinen, James A.

Abstract

To determine experimentally whether or not acrylic plastic can be used to modulate a He-Ne laser beam at 632.6 nm, the author constructed an experimental electrooptic modulator system. In this system, a sample of 50 cm long, 19.5 cm width and .5 cm thick was cut from a commercially available acrylic plastic which is known to be transparent, lightweight and inexpensive. Theoretical review o{ the electrooptic effect in solids is followed by a description of the experimental design, apparatus, procedures and results. From the experimental results, a modulating signal around 1kHz was heard in a speaker. Also a relative measurement of a demodulated signal at modulating frequency of 975Hz is found to be at -35.5 dB which was read on the dB scale of a standing wave indicator having center frequency of 1 kHz. Based on the experimental results, a design concerning the use of acrylic plastic in electrooptic modulation is presented.

Share

COinS

Restricted Access Item

Having trouble?