Transient Absorption

UV-VIS transient absorption experiment: The output of one OPA is used as a pump, exciting the sample. The second OPA provides the probe and reference beams. The probe is focused and overlapped with the excitation beam at the sample position. The ratio I probe/ I ref as a function of time is the signature of the recovery time of the ground state population in the excited sample.


TA beam path


Transient Absorption Transient Absorption