Diffractive light modulator

Details Diffractive light modulator Diffractive light modulator

1998-10-15

2000-05-09

Sugarman, Scott J.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359224, 359247, 359263, G02F 103, G02B 2608

Patent

active

060611669

ABSTRACT:
A modulator for modulating an incident beam of light having a wavelength .lambda. including a base having a surface; an electrode formed over the surface of the base; a plurality of equally spaced apart deformable elements arranged over the electrode and being disposed parallel to each other and secured at opposite ends of each spaced apart deformable element and suspended above the base and having at least two spaced apart conductive and reflective portions and a central reflective portion electrically insulated from the two spaced apart conductive and reflective portions and disposed therebetween; a reflective layer disposed over the base between the spaced apart deformable elements; and applying a potential between the electrode and the spaced apart conductive and reflective portions so that the spaced apart conductive and reflective portions are movable between first and second positions which are substantially .lambda./4 apart.

REFERENCES:
patent: 5311360 (1994-05-01), Bloom et al.
patent: 5677783 (1997-10-01), Bloom et al.
patent: 5757536 (1998-05-01), Ricco et al.
Furlani et al, Analysis of grating light valves with partial surface electrodes, J. Appl. Phys. 83(2), Jan. 15, 1998, pp. 629-634.

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