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of 46
pro vyhledávání: '"Rowell, Nelson L."'
Publikováno v:
2002 Conference on Precision Electromagnetic Measurements digest: CPEM 2002 (Ottawa, Ontario, Canada, June 16-21, 2002), pp. 194-195, 2002. ISBN 0780372435
We demonstrate the feasibility of a novel microwave power standard based on the electromagnetic interaction with cold atoms. Under the effect of the radiation, the internal state populations will undergo a Rabi oscillation. The measurement of its fre
Externí odkaz:
http://arxiv.org/abs/physics/0504066
Publikováno v:
Expanding frontier of atomic physics: 18th International Conference on Atomic Physics [ICAP 2002] (Cambridge, Massachesetts, USA, July 28-August 2, 2002), p. 329, American Institute of Physics, 2003. ISBN 9812382283
We discuss how the observation of Rabi flopping oscillations in a laser cooled atomic sample could be used as a microwave power standard. The rubidium atoms are first trapped in a standard MOT, then optically pumped, and dropped. As they enter the in
Externí odkaz:
http://arxiv.org/abs/physics/0504064
Publikováno v:
2004 Conference on Precision Electromagnetic Measurements digest: CPEM 2004 (London, England, June 27-July 2, 2004), pp. 410-411, 2004. ISBN 0780384938
We have studied the accuracy of the atomic microwave power standard. The atoms are cooled and kept in a Magneto-Optical Trap (MOT), then dropped through a terminated transmission line (a rectangular, R-70 type, waveguide). The measurement of the inte
Externí odkaz:
http://arxiv.org/abs/physics/0504065
Publikováno v:
National Research Council, Canada, Report: 46685, 2005
We demonstrate the feasibility of a novel microwave power standard based on the electromagnetic interaction with laser-cooled atoms. Under the effect of the radiation, the internal state populations undergo a Rabi flopping oscillation. Measurement of
Externí odkaz:
http://arxiv.org/abs/physics/0503120
Publikováno v:
IEEE Trans. Instrum. Meas., Vol. 54, No. 2, April 2005, pp.692-5
We have built an atomic microwave power standard based on the electromagnetic interaction with laser-cooled atoms. The atoms traversed a waveguide transmission line, and under the effect of the radiation, the internal state populations underwent a Ra
Externí odkaz:
http://arxiv.org/abs/physics/0503111
Akademický článek
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Autor:
Rowell, Nelson L., Lockwood, David J.
We have investigated the intense infrared photoluminescence (PL) from several dozen molecular-beam-epitaxy Si₁₋ₓGeₓ layer samples. For one sample the PL was imaged with an infrared camera with the emission integrated from 650 to 1000 meV. Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::62c23c3893a55bdab68ec1165940cea9
https://doi.org/10.1149/09702.0003ecst
https://doi.org/10.1149/09702.0003ecst
Autor:
Rowell, Nelson L., Lockwood, David J.
We analyse the intense photoluminescence (PL) observed at energies from 600 to 1500 meV for many molecular beam epitaxy grown Si1-xGex epitaxial layers. We show that the unexplained broad PL peak is due to self-assembled Ge nanocrystals (NCs) within
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::60619de32c6dae67bd1619d1a47ed2b3
https://doi.org/10.1149/08503.0041ecst
https://doi.org/10.1149/08503.0041ecst
Autor:
Rowell, Nelson L., Lockwood, David J.
Publikováno v:
Topics in Applied Physics; 2021, Vol. 139, p197-235, 39p
Publikováno v:
Journal of Applied Physics; 3/1/2006, Vol. 99 Issue 5, p054701, 6p, 4 Diagrams, 3 Graphs