Evanescent-field interrogator for atomic frequency standards

Details Evanescent-field interrogator for atomic frequency standards Evanescent-field interrogator for atomic frequency standards

G - Physics

04

F

G04F 5/14 (2006.01) H03L 7/26 (2006.01)

Patent

CA 2120420

Abstract A novel atomic frequency standard includes an absorption cell containing a first volume of atoms for varying an intensity of light energy passing therethrough; at least one dielectric resonator for generating an evanescent electromagnetic field that effects hyperfine energy level transitions of the first volume of atoms; a waveguide for housing the absorption cell and one or more dielectric resonator(s); a photo detector mounted near an end of the waveguide for receiving light energy; and an electromagnetic energy injector for electromagnetically exciting the dielectric resonator(s). Preferably, a filter cell is positioned adjacent to a dielectric resonator between the absorption cell and the light source. Tuning of the resonant frequency of the dielectric resonator(s) can be accomplished by adjusting the distance between the filter cell and the adjacent dielectric resonator, and can also be accomplished by positioning a dielectric tuning disk adjacent a dielectric resonator, and adjusting the distance between the dielectric resonator and the dielectric tuning disk.

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