Simple fully reflective method of scatter reduction in 2D-IR spectroscopy

Ivan C. Spector, Courtney M. Olson, Christopher J. Huber, Aaron M. Massari

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A fully reflective two-dimensional IR (2D-IR) setup is described that enables efficient cancellation of scattered light from multiple pulses in the phase-matched direction. The local oscillator pulse and the pulse that stimulates the vibrational echo signal are synchronously modulated (or fibrillated) in time maintaining their phase relationships with the echo wavepacket. The modification is cost-effective and can be easily implemented on existing 2D-IR instruments, and it avoids the addition of dispersive elements into the beam paths. The fibrillation results in a decrease of waiting-time resolution of only tens of femtoseconds and has no impact on the spectral lineshape, making it a general improvement for 2D-IR spectrometers even for weakly or non-scattering samples.

Original languageEnglish (US)
Pages (from-to)1850-1852
Number of pages3
JournalOptics Letters
Issue number8
StatePublished - 2015

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation under Award Number CHE-0847356. I. C. A. was supported by the NSF Graduate Research Fellowship Program (GRFP) (00039202).

Publisher Copyright:
© 2015 Optical Society of America.


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