Femtosecond UV-Vis Transient Absorption Spectroscopic System

Femtosecond UV-Vis Transient Absorption Spectroscopic System

Fig. 1. Apparatus

Fig. 2. Apparatus

white light: 350-730 nm

Use of CaF₂ facilitates generation of white light continuum broader than sapphire.

pump light: 270-350 nm

Pump wavelength between 266 nm (third harmonic) and 400nm (second harmonic) is available with the use of an OPA./dd>

Femtosecond Time-resolved Absorption Spectra of 4-formyl Trans-stilbene

Fig. 3. Time-resolved Absorption Spectra in MeCN

Fig. 4. Fast component

Fig. 5. Slow component

図6: Time-resolved Absorption Spectra in cyclohexane

図7: Component