Multiple wavelength acoustooptic deflection

Details Multiple wavelength acoustooptic deflection Multiple wavelength acoustooptic deflection

1977-02-22

1978-08-29

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

350235, H04N 914, G02F 124

Patent

active

041107888

ABSTRACT:
Traveling acoustic waves, in an acoustooptic cell which exhibits an anisotropic diffraction mode, diffract a portion of polychromatic light passing through the cell. The acoustic waves are generated by electro-mechanical transducer means powered by electrical signals having a frequency component for each optical wavelength, and each frequency component can be varied over a bandwidth chosen such that light of optical wavelengths not associated with that frequency component is diffracted with an intensity a predetermined amount less than the intensity of the diffracted light of the optical wavelength associated with that frequency component. Each acoustic wave frequency component may be synchronized with the other frequency components such that the diffracted beams remain collinear throughout their scan, and the bandwidth of each frequency component can be chosen such that the angles of diffraction of light of all wavelengths are substantially equal.

REFERENCES:
patent: 3524011 (1970-08-01), Korpel
patent: 3743970 (1973-07-01), Bonner et al.
patent: 3783185 (1974-01-01), Spaulding
patent: 4037933 (1977-07-01), Yano et al.
Uchida et al., "Acoustooptic Deflection Materials and Techniques," Proc. of IEEE, vol. 61, No. 8, Aug. 1973, pp. 1073-1092.
Warner et al., "Acoustooptic Light Deflectors Using Optical Activity in Parateilurite," J. Appl. Phys., vol. 43, No. 11, Nov. 1972, pp. 4489-4495.
Dixon, "Acoustic Diffraction of Light in Anisotropic Media," IEEE Journal of Quantum Electronics, vol. QE-3, No. 2, Feb. 1967, pp. 85-93.

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