DOPPLER-FREE POLARIZATION LABELING SPECTROSCOPY OF NAPHTHALENE MOLECULE
Loading...
Date
2002
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Fully resolved rotational structure of the $\bar{8}_{0}^{1}$ vibronic bands of the $A^{1}B_{1u}\leftarrow X^{1}A_{g}$ electronic transition of naphthalene have been investigated in the $32444-32458 cm^{-1}$ region with the techniques of Doppler-free laser polarization (DFLP) spectroscopy and optical-optical double resonance (OODR). For the first time Doppler-free polarisation labeling spectroscopy is successfully applied to a large polatomic molecule and it is demonstrated to be very efeective when combined with OODR. A typical linewidth of 12 MHz was observed, limited only by residual Doppler broadening. By exploiting Doppler-free optical-optical double resonance polarization (DFOOPL) spectroscopy, a combination of DFLP and OODR, both V-type and A-type transition were observed and thereby facilitates the unambiguous assignment of the observed lines. The wave numbers of these lines were recorded with an accuracy better than $0.0002 cm^{-1}$. The assignments of the observed transitions, spectroscopic analysis and dynamics will be discussed.
Description
Author Institution: Molecular Photoscience Research Center, Kobe University; Fachbereich Physik, Universit\""at Kaiserslautern; Faculty of Integrated Human Studies, Kyoto University