DOPPLER-FREE TWO-PHOTON SPECTROSCOPY ON THE S-1[-S-0 ORIGIN BAND OF 1,4-DIAZABICYCLO[2,2,2]OCTANE (DABCO)

摘要

The rotationally resolved two-photon excitation spectrum of the Q-branch (Delta J = 0) of the 0(0)(0) band in the S-1 <-- S-0 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. [References: 17]