Title of article :
Doppler-free two-photon spectroscopy on the S1 ← S0 origin band of 1,4-diazabicyclo[2,2,2]octane (DABCO)
Author/Authors :
Berden، نويسنده , , Giel and Groot، نويسنده , , Tim and van der Veldt، نويسنده , , Tony and Meijer، نويسنده , , Gerard، نويسنده ,
Abstract :
The rotationally resolved two-photon excitation spectrum of the Q-branch (ΔJ = 0) of the O00 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.
