Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/73868
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Type: Journal article
Title: Absolute absorption line-shape measurements at the shot-noise limit
Author: Truong, G.
Anstie, J.
May, E.
Stace, T.
Luiten, A.
Citation: Physical Review A, 2012; 86(3):1-5
Publisher: American Physical Soc
Issue Date: 2012
ISSN: 1050-2947
1094-1622
Statement of
Responsibility: 
Gar-Wing Truong, James D. Anstie, Eric F. May, Thomas M. Stace and André N. Luiten
Abstract: Here, we report a measurement scheme for determining an absorption profile with an accuracy imposed solely by photon shot noise. We demonstrate the power of this technique by measuring the absorption of cesium vapor with an uncertainty at the 2-ppm level. This extremely high signal-to-noise ratio allows us to directly observe the homogeneous line-shape component of the spectral profile, even in the presence of Doppler broadening, by measuring the spectral profile at a frequency detuning more than 200 natural linewidths from the line center. We then use this tool to discover an optically induced broadening process that is quite distinct from the well-known power broadening phenomenon.
Rights: © 2012 American Physical Society
RMID: 0020122186
DOI: 10.1103/PhysRevA.86.030501
Grant ID: http://purl.org/au-research/grants/arc/FT0991631
http://purl.org/au-research/grants/arc/DP1094500
Appears in Collections:Physics publications

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