INFRARED-RADIOFREQUENCY TWO-PHOTON LAMB DIP SPECTROSCOPY OF ${}^{13}CH_{3}F$ AND $PH_{3}$
Loading...
Date
1973
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The two-photon Lamb dip technique previously applied to ammonia using infrared and microwave $radiations^{1}$ is now extended to the radio-frequency region. If a rotational level of a symmetric top molecule with $K \not= 0$ has double parity, a radiofrequency photon can be ``added” directly to an infrared laser photon using the non-linearlity of the molecular transition process. The two-photon Lamb dips observed are listed below. [FIGURE] The observation gives the difference between the laser lines and molecular absorptions with an accuracy of about 0.5 MHz. Precision molecular constants which supplement recent laser-Stark spectroscopy on $^{13}CH_{3}F$ are obtained. M. R\”omheld was the holder of a German Academic Exchange Service Fellowship.
Description
$^{1}$ S.M. Freund and T. Oka, Appl. Phys. Lett. 21, 60 (1972).
Author Institution: Division of Physics, National Research Council of Canada
Author Institution: Division of Physics, National Research Council of Canada