Quantum-state-resolved 2-level femtosecond rotational coherence spectroscopy: Determination of rotational constants at medium and high J in Li2, a simple diatomic system
✍ Scribed by Richard M. Williams; John M. Papanikolas; Jacob Rathje; Stephen R. Leone
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 640 KB
- Volume
- 261
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
A series of rotational wave packet recurrences originating from single 2-level coherent rotational superpositions are observed in the E(~Eg) state of Li 2. The rotational wave packet is created by ultrafast laser excitation from a specific ro-vibrational level in the A(IEff) 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(IEg) state. This technique is discussed vis-h-vis traditional forms of ultrafast rotational coherence spectroscopy where information primarily at low J is obtained.