We introduce a new scheme for two-dimensional IR spectroscopy in the partially collinear pump-probe geometry. Translating birefringent wedges allow generating phase-locked pump pulses with exceptional phase stability, in a simple and compact setup. A He-Ne tracking scheme permits to scan continuously the acquisition time. For a proof-ofprinciple demonstration we use lithium niobate, which allows operation up to 5 ?m. Exploiting the inherent perpendicular polarizations of the two pump pulses, we also demonstrate signal enhancement and scattering suppression. © 2014 Optical Society of America.
2D IR spectroscopy with phase-locked pulse pairs from a birefringent delay line
Manzoni Cristian;Cerullo Giulio
2014
Abstract
We introduce a new scheme for two-dimensional IR spectroscopy in the partially collinear pump-probe geometry. Translating birefringent wedges allow generating phase-locked pump pulses with exceptional phase stability, in a simple and compact setup. A He-Ne tracking scheme permits to scan continuously the acquisition time. For a proof-ofprinciple demonstration we use lithium niobate, which allows operation up to 5 ?m. Exploiting the inherent perpendicular polarizations of the two pump pulses, we also demonstrate signal enhancement and scattering suppression. © 2014 Optical Society of America.File in questo prodotto:
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