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Sliced-jet spectroscopy: a new technique for sub-Doppler spectroscopy of jet-cooled molecules

✍ Scribed by Louis R. Mercorelli; Sameer A. Hammad; David S. Perry

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 446 KB
Volume: 162
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)87043-5

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✦ Synopsis

Direct absorption spectra ofjet-cooled molecules are recorded by m$tipassing an infrared laser beam through a nozzle expansion and with all light rays perpendicular to the nozzle axis. A small blade is placed just upstream of the laser crossing to obstruct the passage of molecules that would otherwise absorb at the center of the Doppler profile. For the acetylene R 1 line at 3300 cm-', the resulting holes are as narrow as 12 MHz. The l-butyne 3333 cm-' band is used to illustrate the technique.

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