Experimental implementations of 2D IR spectroscopy through a horizontal pulse shaper design and a focal plane array detector

TitleExperimental implementations of 2D IR spectroscopy through a horizontal pulse shaper design and a focal plane array detector
Publication TypeJournal Article
Year of Publication2016
AuthorsGhosh A, Serrano AL, Oudenhoven TA, Ostrander JS, Eklund EC, Blair AF, Zanni M T.
Secondary TitleOptics Letters
Volume41
Issue3
Pagination524-527
Date Published01/2016
PublisherOptics Letters
Abstract

Aided by advances in optical engineering, two-dimensional infrared spectroscopy (2D IR) has developed into a promising method for probing structural dynamics in biophysics and material science. We report two new advances for 2D IR spectrometers. First, we report a fully reflective and totally horizontal pulse shaper, which significantly simplifies alignment. Second, we demonstrate the applicability of mid-IR focal plane arrays (FPAs) as suitable detectors in 2D IR experiments. FPAs have more pixels than conventional linear arrays and can be used to multiplex optical detection. We simultaneously measure the spectra of a reference beam, which improves the signal-to-noise by a factor of 4; and two additional beams that are orthogonally polarized probe pulses for 2D IR anisotropy experiments.

URLhttps://www.osapublishing.org/ol/abstract.cfm?uri=ol-41-3-524&origin=search
DOI10.1364/OL.41.000524