Transient laser frequency modulation spectroscopy.
Explicitly time-dependent implementations of optical frequency modulation spectroscopy have been recently applied to a wide range of problems in chemical physics. We provide a brief description of the methodology, with an emphasis on its intrinsic advantages for interrogating transient species. Several examples highlight the application of the technique to high-resolution absorption spectra of free radicals, rate measurements for gas-phase reactions, and Doppler spectroscopy of the gas-phase products of photoinitiated reactions.
Hall
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Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA. GregHall@bnl.gov
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