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Optically Pumped FIR Laser Lines from CH3OH: New Laser Lines, Frequency Measurements, and Assignments

✍ Scribed by Edjar M. Telles; Hitoshi Odashima; Lyndon R. Zink; K.M. Evenson

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 130 KB
Volume: 195
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1999.7834

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✦ Synopsis

We report the identification and characterization of eight new FIR laser lines from methanol (CH 3 OH) in the range 48.4 to 453.7 m pumped by sequence and hot bands of a cw CO 2 laser. Frequency measurements for most of the new FIR laser lines and from previously reported ones were obtained in the range 0.6 -6.8 THz with a one-sigma reproducibility of two parts in 10 7 . We propose an assignment of energy levels for two of the new laser lines and for five pumped by 10R(46) previously reported. The high frequency lines with absorption centers outside of the tuning range of the CO 2 laser pump showed doublets. These were used to evaluate the offsets of the CO 2 absorption transitions.

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