Kerr cell light modulator with crossed fields.
A cell with two identical pairs of electrodes oriented at 90 degrees is examined. When both elements are submitted to the same dc voltage and to two ac voltages having the same amplitude but phase-shifted by 180 degrees , the birefringence of the cell is proportional to the ac voltage as in a Pockels cell. Modulation experiments on the cell containing deionized nitrobenzene are presented and analogies and differences with Pockels cells are emphasized.
J C
JC
Filippini