Karim Benmessaï

Ultrasensitive microwave spectroscopy of paramagnetic impurities in sapphire crystals at millikelvin temperatures

Warrick G. Farr, Daniel L. Creedon, Maxim Goryachev et al. · Physical Review B · 2013 · 67 citations

Natural Sciences, Electrical Engineering, Physics +17

Measurement of the Fundamental Thermal Noise Limit in a Cryogenic Sapphire Frequency Standard Using Bimodal Maser Oscillations

Karim Benmessaï, Daniel L. Creedon, Michael E. Tobar et al. · Physical Review Letters · 2008 · 36 citations · Full text

Natural Sciences, Physics, Instrumentation +12

Frequency Conversion in a High<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Q</mml:mi></mml:math>-Factor Sapphire Whispering Gallery Mode Resonator due to Paramagnetic Nonlinearity

Daniel L. Creedon, Karim Benmessaï, Michael E. Tobar · Physical Review Letters · 2012 · 18 citations · Full text

Natural Sciences, Physics, Microwave Engineering +14

Amplification process in a high-<i>Q</i>cryogenic whispering gallery mode sapphire Fe^{3 +}maser

Karim Benmessaï, P-Y. Bourgeois, Michael E. Tobar et al. · Measurement Science and Technology · 2009 · 13 citations

Engineering, Electrical Engineering, Cavity Preparation +12