M. Towrie et al., Tunable picosecond optical parametric amplifiers for time resolved resonance Raman spectroscopy, LASER CHEM, 19(1-4), 1999, pp. 153-159
A picosecond optical parametric amplifier, OPA, system suitable for pump an
d probe spectroscopy has been developed. Two OPAs are simultaneously pumped
by a titanium sapphire regenerative amplifier to produce several microjoul
es output over the 470 to 2000 nm wavelength range. One OPA used as the pro
be operates with c. 25cm(-1) linewidth over this tuning range. The system i
s optimised for TR3 spectroscopy. Some preliminary experiments on Trolox, a
water soluable Vitamin E derivative, are presented.