Picosecond time-resolved vibrational spectroscopy using a regenerative amplifier.
We demonstrate and characterize an apparatus for transient infrared spectroscopy with a 5-ps resolution. A visible pump and narrow-band mid-infrared probe are both derived from a source that is based on a pulsed Nd:YAG regenerative amplifier that operates at 540 Hz. We measure transient spectra in the range 1770-2250 cm(-1) with a 1-cm(-1) resolution and sensitivity to absorbance changes less than or equal to 1 x 10(-3). As an example, we present results from experiments to study ligand photodissociation from carboxymyoglobin in D(2)0.
Jedju
T M
TM
Roberson
M W
MW
Rothberg
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