Maser oscillation in a whispering-gallery-mode microwave resonator

P.Y. Bourgeois; N. Bazin; Y. Kersale; V. Giordano; Michael Tobar; M. Oxborrow

doi:10.1063/1.2137452

Maser oscillation in a whispering-gallery-mode microwave resonator

P.Y. Bourgeois, N. Bazin, Y. Kersale, V. Giordano, Michael Tobar, M. Oxborrow

Graduate Research School

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

We report the observation of above-threshold maser oscillation in a whispering-gallery (WG)-mode resonator, whose quasitransverse-magnetic, 17th-azimuthal-order WG mode, at a frequency of approximately 12.038 GHz, with a loaded Q of several hundred million, is supported on a cylinder of monocrystalline sapphire. An electron spin resonance associated with Fe3+ ions, that are substitutively included within the sapphire at an effective concentration of a few parts per billion, coincides in frequency with that of the (considerably narrower) WG mode. By applying a cw "pump" to the resonator at a frequency of approximately 31.34 GHz, with no applied dc 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 10(-14) for sampling intervals up to 100 s. (c) 2005 American Institute of Physics.

Original language	English
Pages (from-to)	224104-1-224104-3
Journal	Applied Physics Letters
Volume	87
Issue number	22
DOIs	https://doi.org/10.1063/1.2137452
Publication status	Published - 2005

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title = "Maser oscillation in a whispering-gallery-mode microwave resonator",

abstract = "We report the observation of above-threshold maser oscillation in a whispering-gallery (WG)-mode resonator, whose quasitransverse-magnetic, 17th-azimuthal-order WG mode, at a frequency of approximately 12.038 GHz, with a loaded Q of several hundred million, is supported on a cylinder of monocrystalline sapphire. An electron spin resonance associated with Fe3+ ions, that are substitutively included within the sapphire at an effective concentration of a few parts per billion, coincides in frequency with that of the (considerably narrower) WG mode. By applying a cw {"}pump{"} to the resonator at a frequency of approximately 31.34 GHz, with no applied dc 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 10(-14) for sampling intervals up to 100 s. (c) 2005 American Institute of Physics.",

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T1 - Maser oscillation in a whispering-gallery-mode microwave resonator

AU - Bourgeois, P.Y.

AU - Bazin, N.

AU - Kersale, Y.

AU - Giordano, V.

AU - Tobar, Michael

AU - Oxborrow, M.

PY - 2005

Y1 - 2005

N2 - We report the observation of above-threshold maser oscillation in a whispering-gallery (WG)-mode resonator, whose quasitransverse-magnetic, 17th-azimuthal-order WG mode, at a frequency of approximately 12.038 GHz, with a loaded Q of several hundred million, is supported on a cylinder of monocrystalline sapphire. An electron spin resonance associated with Fe3+ ions, that are substitutively included within the sapphire at an effective concentration of a few parts per billion, coincides in frequency with that of the (considerably narrower) WG mode. By applying a cw "pump" to the resonator at a frequency of approximately 31.34 GHz, with no applied dc 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 10(-14) for sampling intervals up to 100 s. (c) 2005 American Institute of Physics.

AB - We report the observation of above-threshold maser oscillation in a whispering-gallery (WG)-mode resonator, whose quasitransverse-magnetic, 17th-azimuthal-order WG mode, at a frequency of approximately 12.038 GHz, with a loaded Q of several hundred million, is supported on a cylinder of monocrystalline sapphire. An electron spin resonance associated with Fe3+ ions, that are substitutively included within the sapphire at an effective concentration of a few parts per billion, coincides in frequency with that of the (considerably narrower) WG mode. By applying a cw "pump" to the resonator at a frequency of approximately 31.34 GHz, with no applied dc 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 10(-14) for sampling intervals up to 100 s. (c) 2005 American Institute of Physics.

U2 - 10.1063/1.2137452

DO - 10.1063/1.2137452

M3 - Article

SN - 0003-6951

VL - 87

SP - 224104-1-224104-3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

ER -

Maser oscillation in a whispering-gallery-mode microwave resonator

Abstract

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