Influence of the electron spin resonance saturation on the power sensitivity of cryogenic sapphire resonators

Journal Article · Thu Aug 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4891685· OSTI ID:22314573

Giordano, Vincent; Grop, Serge; Bourgeois, Pierre-Yves; Kersalé, Yann; Rubiola, Enrico ^[1]

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1. FEMTO-ST Institute—UMR 6174, CNRS/ENSMM/UFC/UTBM, 26 Chemin de l'Épitaphe, 25000 Besançon (France)

Here, we study the paramagnetic ions behavior in presence of a strong microwave electromagnetic field sustained inside a cryogenic sapphire whispering gallery mode resonator. The high frequency measurement resolution that can be now achieved by comparing two Cryogenic Sapphire Oscillators (CSOs) permit to observe clearly the non-linearity of the resonator power sensitivity. These observations that, in turn, allow us to optimize the CSO operation are well explained by the electron spin resonance saturation of the paramagnetic impurities contained in the sapphire crystal.

• OSTI ID: 22314573
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
CRYSTALS
ELECTROMAGNETIC FIELDS
ELECTRON SPIN RESONANCE
FREQUENCY MEASUREMENT
IMPURITIES
IONS
MICROWAVE RADIATION
OSCILLATORS
PARAMAGNETISM
RESOLUTION
RESONATORS
SAPPHIRE
SATURATION
SENSITIVITY