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Time-domain measurement of optical activity by an ultrastable common-path interferometer


Preda, Fabrizio; Perri, Antonio; Réhault, Julien; Dutta, Biplab; Helbing, Jan; Cerullo, Giulio; Polli, Dario (2018). Time-domain measurement of optical activity by an ultrastable common-path interferometer. Optics letters, 43(8):1882.

Abstract

We introduce a novel configuration for the broadband measurement of the optical activity of molecules, combining time-domain detection with heterodyne amplification. A birefringent common-path polarization-division interferometer creates two phase-locked replicas of the input light with orthogonal polarization. The more intense replica interacts with the sample, producing a chiral free-induction decay field, which interferes with the other replica, acting as a time-delayed phase-coherent local oscillator. By recording the delay-dependent interferogram, we obtain by a Fourier transform both the circular dichroism and circular birefringence spectra. Our compact, low-cost setup accepts ultrashort light pulses, making it suitable for measurement of transient optical activity.

Abstract

We introduce a novel configuration for the broadband measurement of the optical activity of molecules, combining time-domain detection with heterodyne amplification. A birefringent common-path polarization-division interferometer creates two phase-locked replicas of the input light with orthogonal polarization. The more intense replica interacts with the sample, producing a chiral free-induction decay field, which interferes with the other replica, acting as a time-delayed phase-coherent local oscillator. By recording the delay-dependent interferogram, we obtain by a Fourier transform both the circular dichroism and circular birefringence spectra. Our compact, low-cost setup accepts ultrashort light pulses, making it suitable for measurement of transient optical activity.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:15 April 2018
Deposited On:21 Nov 2018 16:22
Last Modified:21 Nov 2018 16:32
Publisher:Optical Society of America
ISSN:0146-9592
OA Status:Green
Publisher DOI:https://doi.org/10.1364/ol.43.001882
Project Information:
  • : FunderH2020
  • : Grant ID754802
  • : Project TitleCHIMERA - A novel instrument to identify chiral molecules for pharmaceutics and bio-chemistry.
  • : FunderH2020
  • : Grant ID648615
  • : Project TitleVIBRA - Very fast Imaging by Broadband coherent RAman
  • : FunderFP7
  • : Grant ID291198
  • : Project TitleSTRATUS - Structure and dynamics of biomolecules by two-dimensional ultraviolet spectroscopy
  • : FunderSNSF
  • : Grant ID200020_143487
  • : Project TitleTime-resolved vibrational circular dichroism and vibrational rotary dispersion spectroscopy

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