Spatial light modulator

Details Spatial light modulator Spatial light modulator

1985-04-25

1988-01-05

Cangialosi, Salvatore

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

350374, H01S 300

Patent

active

047178930

ABSTRACT:
Improved spatial light modulators, each consisting of an electron beam source formed within a vacuum envelope, i.e., a photoelectric layer; and a electro-optical crystal to store electrons emitted from the electron beam source as a charge to change the optical refraction index thereof. The charge storage surface of the electro-optical crystal constitutes a dielectric multilayer mirror or a specific dielectric film layer whose surface resistance is high and stable enough to store the charge in a high vacuum of 10.sup.-7 torr at an elevated temperature of 350.degree. C.

REFERENCES:
patent: 3882454 (1975-05-01), Marie et al.
patent: 4481531 (1984-11-01), Warde et al.

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