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2D IR spectroscopy with phase-locked pulse pairs from a birefringent delay line

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2014
Author Réhault Julien, Maiuri Margherita, Manzoni Cristian, Brida Daniele, Helbing Jan, Cerullo Giulio,
Project Time-resolved vibrational circular dichroism and vibrational rotary dispersion spectroscopy
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Original article (peer-reviewed)

Journal Optics Express
Volume (Issue) 22(8)
Page(s) 9063 - 9072
Title of proceedings Optics Express
DOI 10.1364/OE.22.009063

Open Access

URL http://www.opticsexpress.org/abstract.cfm?URI=oe-22-8-9063
Type of Open Access Publisher (Gold Open Access)

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-of-principle demonstration we use lithium niobate, which allows operation up to 5 mum. Exploiting the inherent perpendicular polarizations of the two pump pulses, we also demonstrate signal enhancement and scattering suppression.
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