Near millimeter wavelength electromagnetic filter

Details Near millimeter wavelength electromagnetic filter Near millimeter wavelength electromagnetic filter

1978-11-13

1980-09-02

Henry, Jon W.

350 11, G02B 528

Patent

active

042203996

ABSTRACT:
A near millimeter wavelength electromagnetic filter having a pair of substantially parallel mirrors and a beamsplitter interposed therebetween. The mirrors are spaced apart a distance equal to an integer times half the preselected (near millimeter) wavelength thereby producing a resonant condition. At this resonant condition substantially all the preselected wavelength radiation is reflected by the beamsplitter while other wavelengths pass therethrough thereby removing the preselected wavelength radiation from a beam of radiant energy.

REFERENCES:
patent: 3499699 (1970-03-01), Ayres et al.
patent: 3575490 (1971-04-01), Reisman
patent: 3614655 (1971-10-01), Bolger
patent: 3799654 (1974-03-01), Donne

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