Abstract
The kinetics of photochemical spectral hole burning are modeled considering low temperature photochemical mechanisms requiring both one and two photons. The calculated results are compared with experimental results on photochemical hole burning in the anthracene–tetracene photoadduct (AT) using single color irradiation. Better agreement is obtained for the two photon mechanism while assuming the second photon is absorbed by the lowest triplet state of AT. The effects of irradiation source bandwidth and polarization are included in the analysis. Photochemical and transient saturation effects are evident in the calculated hole shapes.
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