dorsal/arxiv
View SchemaMaser Oscillation in a Whispering-Gallery-Mode Microwave Resonator
| Authors | P. -Y. Bourgeois, N. Bazin, Y. Kersale, V. Giordano, M. E. Tobar, M. Oxborrow |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0506076 |
| URL | https://arxiv.org/abs/quant-ph/0506076 |
| DOI | 10.1063/1.2137452 |
Abstract
We report the first observation of above-threshold maser oscillation in a whispering-gallery(WG)-mode resonator, whose quasi-transverse-magnetic, 17th azimuthal-order WG mode, at a frequency of approx. 12.038 GHz, with a loaded Q of several hundred million, is supported on a cylinder of mono-crystalline sapphire. An electron spin resonance (ESR) associated with Fe3+ ions, that are substitutively included within the sapphire at a concentration of a few parts per billion, coincides in frequency with that of the (considerably narrower) WG mode. By applying a c.w. `pump' to the resonator at a frequency of approx. 31.34 GHz, with no applied d.c. magnetic field, the WG (`signal') mode is energized through a three-level maser scheme. Preliminary measurements demonstrate a frequency stability (Allan deviation) of a few times 1e-14 for sampling intervals up to 100 s.
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"abstract": "We report the first observation of above-threshold maser oscillation in a\nwhispering-gallery(WG)-mode resonator, whose quasi-transverse-magnetic, 17th\nazimuthal-order WG mode, at a frequency of approx. 12.038 GHz, with a loaded Q\nof several hundred million, is supported on a cylinder of mono-crystalline\nsapphire. An electron spin resonance (ESR) associated with Fe3+ ions, that are\nsubstitutively included within the sapphire at a concentration of a few parts\nper billion, coincides in frequency with that of the (considerably narrower) WG\nmode. By applying a c.w. `pump\u0027 to the resonator at a frequency of approx.\n31.34 GHz, with no applied d.c. magnetic field, the WG (`signal\u0027) mode is\nenergized through a three-level maser scheme. Preliminary measurements\ndemonstrate a frequency stability (Allan deviation) of a few times 1e-14 for\nsampling intervals up to 100 s.",
"arxiv_id": "quant-ph/0506076",
"authors": [
"P. -Y. Bourgeois",
"N. Bazin",
"Y. Kersale",
"V. Giordano",
"M. E. Tobar",
"M. Oxborrow"
],
"categories": [
"quant-ph"
],
"doi": "10.1063/1.2137452",
"title": "Maser Oscillation in a Whispering-Gallery-Mode Microwave Resonator",
"url": "https://arxiv.org/abs/quant-ph/0506076"
},
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