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Proceedings Paper

Double resonance measurements of far-infrared lasing transitions in methanol
Author(s): I. Mukhopadhyay; K. V. L. N. Sastry
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Paper Abstract

In this work, precise frequencies were measured for two important far IR (FIR) laser transitions in methanol optically pumped by the 9P(16) CO2 laser line at an offset of +64 MHz from the line center, using IR - millimeter wave double resonance technique. The two measured FIR frequencies are at 525,427.902 and 477,790.879 MHz, with an estimated precision of +/- kHz. In addition another frequency was measured at 573,025.151 MHz, and this line corresponds to an absorption transition whose lower level is the upper pumped level. The measurements provide valuable confirmation for the assignments of the IR as well as the FIR transitions. In addition, we also measured accurate frequencies for several transitions in the ground vibrational state in the range 109-127 GHz.

Paper Details

Date Published: 18 December 1996
PDF: 7 pages
Proc. SPIE 2842, Millimeter and Submillimeter Waves and Applications III, (18 December 1996); doi: 10.1117/12.262745
Show Author Affiliations
I. Mukhopadhyay, Ctr. for Advanced Technology (India)
K. V. L. N. Sastry, Univ. of New Brunswick (Canada)

Published in SPIE Proceedings Vol. 2842:
Millimeter and Submillimeter Waves and Applications III
Mohammed N. Afsar, Editor(s)

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