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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, S R. Leone

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

Keywords

Li<sub>2</sub>, rotational coherence spectroscopy, ultrafast spectroscopy

Citation

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 June 24, 2024)

Issues

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Created September 30, 1996, Updated October 12, 2021