| Issue |
Europhys. Lett.
Volume 37, Number 2, January II 1997
|
|
|---|---|---|
| Page(s) | 103 - 108 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/epl/i1997-00118-y | |
| Published online | 01 September 2002 | |
Slow-molecule detection in Doppler-free two-photon spectroscopy
Laboratoire de Physique des Lasers, URA n. 282 du CNRS, Université Paris-Nord, Avenue J.-B. Clément, F-93430
Villetaneuse, France
Received:
7
October
1996
Accepted:
2
December
1996
We present the first observation of optical detection of slow molecules by
using Doppler-free two-photon spectroscopy (DFTPS). We obtained a linewidth of
280 Hz (HWHM) which is 23 times narrower than the transit broadening for the
most probable velocity class. Slow-molecule two-photon resonances are, thus,
very promising candidates for frequency standards in the infrared. This
experiment was performed in the 
band of 
in the 
spectral region. It reveals also for the first time a magnetic hyperfine
structure in molecular DFTPS.
PACS: 33.70.Jg – Line and band widths, shapes, and shifts / 33.80.-b – Photon interactions with molecules / 42.62.Fi – Laser spectroscopy
© EDP Sciences, 1997
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