Optical notch filter utilizing electric dipole resonance absorpt

Details Optical notch filter utilizing electric dipole resonance absorpt Optical notch filter utilizing electric dipole resonance absorpt

1976-10-12

1978-07-11

Corbin, John K.

350 15, 350147, 350267, 350354, G02B 524

Patent

active

040998541

ABSTRACT:
An optical notch filter having a suspension of small absorbing particles which blocks a narrow band of frequencies. The small absorbent particles are suspended as a colloidal system which can have either a solid, liquid or gas as host material. The absorbing particles can be incorporated in a solid matrix as a transmission filter or used on the surface of a mirror as a reflection filter. The filter can be tuned by an externally applied electric field or by applying hydrostatic pressure.

REFERENCES:
patent: 3458249 (1969-07-01), George
patent: 3512876 (1970-05-01), Marks
patent: 3711181 (1973-01-01), Adams, Jr. et al.
patent: 3841732 (1974-10-01), Marks
Green et al., "Optical Properties of the Alpha-Phase Alloys AG-ZN and AG-" Physical Review B, vol. 2, No. 2, Jul. 1970, pp. 330-340.
Kerker et al., "Electrooptic Properties of Absorbing Spheroids," Applied Optics, vol. 10, No. 12, Dec. 1971, pp. 2670-2674.
Naumenko et al., "Absorption of Light by Suspension of Particles. . .", Journ. of Appl. Spectro., vol. 20, No. 4 , Apr. 1974, pp. 523-527.
Ganiere et al., "On the Size Dependence of the Optical Absorption. . .", Solid State Commun., vol. 16, No. 1, Jan. 1975, pp. 113-115.
The American Heritage Dictionary of the English Language, W. Morris. Ed., Houghton Mifflin Co., Boston, 1976, pp. 262, 806, 807.

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