To perform time-resolved vibrational structural studies with femtosecond stimulated Raman spectroscopy, it is desirable to produce tunable transform-limited picosecond pulses in the visible from a femtosecond laser system. The authors demonstrate here the generation of similar to 36 cm(-1) bandwidth tunable picosecond pulses across the entire visible spectral range using a narrow-bandwidth optical parametric amplifier with chirped pulse pumping. These pulses are characterized and used to obtain broadband stimulated Raman spectra with 38 cm(-1) resolution.
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