Doppler-free two-photon spectroscopy on the S₁ ← S₀ origin band of 1,4-diazabicyclo[2,2,2]octane (DABCO)

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• 作者：Berden ; Giel ; Groot ; Tim ; van der Veldt ; Tony ; Meijer ; Gerard
• 刊名：Chemical Physics Letters
• 出版年：1997
• 出版时间：January 31, 1997
• 年：1997
• 卷：265
• 期：1-2
• 页码：204-208
• 全文大小：404 K

文摘

The rotationally resolved two-photon excitation spectrum of the Q-branch (ΔJ = 0) of the 0⁰₀ band in the S₁ ← S₀ transition of DABCO was recorded in a cell at room temperature. Two counterpropagating narrow bandwidth laser beams were used for Doppler-free excitation. The observed linewidth was 20 MHz. Analysis of the spectra provides the change upon electronic excitation of the rotational constants.