Absolute absorption line-shape measurements at the shot-noise limit

Truong, Gar-Wing, Anstie, James D., May, Eric F., Stace, Thomas M. and Luiten, Andre N. (2012) Absolute absorption line-shape measurements at the shot-noise limit. Physical Review a, 86 3: 030501.1-030501.5.

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Author Truong, Gar-Wing
Anstie, James D.
May, Eric F.
Stace, Thomas M.
Luiten, Andre N.
Total Author Count Override 5
Title Absolute absorption line-shape measurements at the shot-noise limit
Journal name Physical Review a   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2012-09
Sub-type Article (original research)
DOI 10.1103/PhysRevA.86.030501
Volume 86
Issue 3
Start page 030501.1
End page 030501.5
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2013
Language eng
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.
Keyword Frequency comb spectroscopy
Diode-laser
Open Access Mandate Compliance Yes - Open Access (Publisher PDF in repository)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2013 Collection
 
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