Accurate Rotational Constants of from Measurement of cw Beats in Bulk GaAs Between C Vibrational-Rotational Laser Lines
- 21 April 1969
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 22 (16), 811-814
- https://doi.org/10.1103/physrevlett.22.811
Abstract
A room-temperature bulk GaAs mixer is used to mix frequencies of pairs of cw vibrational-rotational C laser lines, each stabilized to line center. The beat frequencies, in the millimeter-wave region of 50-80 GHz, are measured for 37 pairs of transitions to better than 1 MHz. The deduced rotational constants for the relevant vibrational levels (00°1, 10°0, 02°0) are 25 to 200 times more accurate than the best previous results (from conventional spectroscopy).
Keywords
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