'International Symposium on Molecular Spectroscopy'
Abstract
Microwave-millimeter double resonance spectroscopy has been commonly
applied by driving absorption with the millimeter light and then
probing the resonance using a Fourier Transform Microwave (FTMW)
spectrometer. We will present data from an inverse scheme, in which
millimeter light is used to probe a transition whose intensity is
modulated by the application of microwave radiation. This detection
scheme is effective in aiding the assignment of millimeter-wave
transitions by revealing which energy levels are
associated with particular spectral lines. To increase the speed of
this detection technique, we incorporated an arbitrary waveform
generator into the microwave source to rapidly sweep the microwave
radiation through a broad frequency range. We will discuss this
approach as applied to pulsed valve experiments and in combination
with a laser-induced chemistry experiment. Potential applications to
other experimental designs will also be discussed
