54 citations · 350 across the 21 of their papers we have counts for
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Frequency-Temperature sensitivity reduction with optimized microwave Bragg resonators
Jean-Michel Le Floch, Christopher Murphy, John Gideon Hartnett +4
Dielectric resonators are employed to build state-of-the-art low-noise and high- stability oscillators operating at room and cryogenic temperatures. A resonator temperature coeffic…
Piezoelectric Voltage Coupled Reentrant Cavity Resonator
Natalia C. Carvalho, Yaohui Fan, Jean-Michel Le Floch +1
A piezoelectric voltage coupled microwave reentrant cavity has been developed. The central cavity post is bonded to a piezoelectric actuator allowing the voltage control of small p…
Discovery of higher order reentrant modes by constructing a cylindrical symmetric ring and post cavity resonator
Y. Fan, Z. Zhang, N. C. Carvalho +3
Analysis of the properties of resonant modes in a reentrant cavity structure comprising of a post and a ring was undertaken and verified experimentally. In particular we show the e…
Rigorous analysis of highly tunable cylindrical Transverse Magnetic mode re-entrant cavities
J-M. Le Floch, Y. Fan, M. Aubourg +8
Cylindrical re-entrant cavities are unique three-dimensional structures that resonate with their electric and magnetic fields in separate parts of the cavity. To further understand…
Resonator Power to Frequency Conversion in a Cryogenic Sapphire Oscillator
Nitin R. Nand, Stephen R. Parker, Eugene N. Ivanov +3
We report on the measurement and characterization of power to frequency conversion in the resonant mode of a cryogenic sapphire loaded cavity resonator, which is used as the freque…
Controlling the Frequency-Temperature Sensitivity of a Cryogenic Sapphire Maser Frequency Standard by Manipulating Fe3+ Spins in the Sapphire Lattice
Karim Benmessai, Daniel L. Creedon, Mohamad Mrad +5
To create a stable signal from a cryogenic sapphire maser frequency standard, the frequency-temperature dependence of the supporting Whispering Gallery mode must be annulled. We re…
Detrapping and retrapping of free carriers in nominally pure single crystal GaP, GaAs and 4H-SiC semiconductors under light illumination at cryogenic temperatures
David Mouneyrac, John G. Hartnett, Jean-Michel Le Floch +3
We report on extremely sensitive measurements of changes in the microwave properties of high purity non-intentionally-doped single-crystal semiconductor samples of gallium phosphid…
Cryogenic Sapphire Oscillator using a low-vibration design pulse-tube cryocooler: First results
John G. Hartnett, Nitin R. Nand, Chao Wang +1
A Cryogenic Sapphire Oscillator has been implemented at 11.2 GHz using a low-vibration design pulse-tube cryocooler. Compared with a state-of-the-art liquid helium cooled CSO in th…