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. Author manuscript; available in PMC: 2008 Jun 23.
Published in final edited form as: J Am Chem Soc. 2003 Nov 12;125(45):13804–13818. doi: 10.1021/ja035654x

Figure 7.

Figure 7

Vibrational echo spectrum at τ = 2.1 ps, Tw = 0 ps. The 0–1 and 1–2 transitions of the A1 substate are clearly seen at 1945 and 1920 cm−1. Contributions to the echo spectrum from the A3 substate have been eliminated using T2 selectivity. The splitting between the two peaks gives an anharmonicity of Δ = 25.3 cm−1.