Abstract
A sensitive dye-laser spectrometer is constructed to observe the Stark effect of weak-overtone transitions in NH3. A ΔP/P sensitivity of 10−6 is achieved with the help of a laser-noise-reduction system. A relatively short (30-cm) and narrow-gap (0.25-mm) Stark electrode makes it possible to apply a high electric field on molecular gas at low pressure (~1 Torr). The Stark components of the v = 5 overtone band transitions of The rotational assignments are confirmed, and the dipole moment in the v = 5 excited vibrational state is determined to be 1.40 ± 0.02 D.
© 1989 Optical Society of America
Full Article | PDF ArticleMore Like This
W. H. Weber and E. A. Cohen
Opt. Lett. 8(9) 488-490 (1983)
Hiroyuki Sasada
Opt. Lett. 9(10) 448-450 (1984)
W. H. Weber, P. D. Maker, K. F. Yeung, and C. W. Peters
Appl. Opt. 13(6) 1431-1434 (1974)