Oscillators – Molecular or particle resonant type
Reexamination Certificate
2004-03-18
2008-03-18
Pascal, Robert (Department: 2817)
Oscillators
Molecular or particle resonant type
C331S003000, C372S032000
Reexamination Certificate
active
07345553
ABSTRACT:
An apparatus and method for measuring CPT is disclosed. The apparatus includes a quantum absorber that is irradiated by radiation from an electromagnetic radiation source. The quantum absorber includes a material that exhibits CPT. The electromagnetic radiation source generates electromagnetic radiation having first and second CPT-generating frequency components. The first CPT-generating frequency component has a frequency νL−ν, and a first CPT component amplitude. The second CPT generating frequency component has a frequency νL+ν and a second CPT component amplitude. The apparatus also includes a detector for generating a detector signal related to the power of electromagnetic radiation that leaves the quantum absorber. The detector signal exhibits an asymmetry as a function of frequency ν in a frequency range about a frequency ν0. The apparatus includes an asymmetry servo loop that alters one of νL, the first CPT component amplitude, and the second CPT component amplitude to reduce the asymmetry.
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Berberian John Edwin
Cutler Leonard S.
Zhu Miao
Agilent Technologie,s Inc.
Goodley James
Pascal Robert
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