Williams, R.
and Papanikolas, J.
(1996),
Quantum-state-resolved 2-level femtosecond rotational coherence spectroscopy: Determination of rotational constants at medium and high J in Li<sub>2</sub>, a simple diatomic system, Chemical Physics Letters
(Accessed October 18, 2025)
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Quantum-state-resolved 2-level femtosecond rotational coherence spectroscopy: Determination of rotational constants at medium and high J in Li2, a simple diatomic system
Published
Author(s)
R M. Williams, J M. Papanikolas, J , . Rathje,
Abstract
Rotational wave packet recurrences originating form a single 2-level coherent rotational superposition are observed in the E(1Σ+g) state of Li2. The rotational wave packet is created by ultrafast laser excitation from a specific ro-vibrational level in the A(1Σ+u) state selected by cw laser excitation. Using this technique the rotational constant and the centrifugal distortion constant are determined for high J levels of the V=9 vibrational level in the E(1Σ+g) state. This technique is discussed via-a-vis traditional forms of ultrafast rotational coherency spectroscopy where information primarily at low J is obtained.Citation
Chemical Physics Letters
Volume
261
Issue
No. 4-5
Pub Type
Journals
Keywords
Li<sub>2</sub>, rotational coherence spectroscopy, ultrafast spectroscopy
Citation
Issues
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Created September 30, 1996, Updated October 12, 2021