Eur. Phys. J. Appl. Phys.
Volume 57, Number 2, February 2012
|Number of page(s)||7|
|Section||Instrumentation and Metrology|
|Published online||30 January 2012|
Analysis of the whispering gallery mode sapphire Fe3+ maser under magnetic field
FEMTO-ST Institute, Time and Frequency Department, UMR 6174 CNRS, ENSMM, 26 Chemin de l’Épitaphe, 25030 Besançon Cedex, France
2 University of Western Australia, School of Physics, Crawley 6009, WA, Australia
a e-mail: email@example.com
Revised: 29 November 2011
Accepted: 2 January 2012
Published online: 30 January 2012
This article describes the influence of the magnetic field on a small amount of residual Fe3+ ion impurities contained in a sapphire resonator excited on a whispering gallery mode and cooled down to 4 K. The energy levels and transition probabilities between pairs of levels of the system are calculated in order to determine the effect of the magnetic field on the maser output power and also on the pump power threshold.
© EDP Sciences, 2012
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