Sub-second hyper-spectral low-frequency vibrational imaging via impulsive Raman excitation

Dekel Raanan, Xavier Audier, Siddarth Shivkumar, Maor Asher, Matan Menahem, Omer Yaffe, Nicolas Forget, Hervé Rigneault, Dan Oron

Research output: Contribution to journalArticle

Abstract

Real-time vibrational microscopy has been recently demonstrated by various techniques, most of them utilizing the well-known schemes of coherent anti-stokes Raman scattering and stimulated Raman scattering. These techniques readily provide valuable chemical information mostly in the higher vibrational frequency regime (>400 cm−1). Addressing the low vibrational frequency regime (<200 cm−1) is challenging due to the usage of spectral filters that are required to isolate the signal from the Rayleigh scattered excitation field. In this Letter, we report on rapid, high-resolution, low-frequency (<130 cm−1) vibrational microscopy using impulsive coherent Raman excitation. By combining impulsive excitation with a fast acousto-optic delay line, we detect the Raman-induced optical Kerr lensing and spectral shift effects with a 25 μs pixel dwell time to produce shot-noise limited, low-frequency hyper-spectral images of various samples.

Original languageEnglish
Pages (from-to)5153-5156
Number of pages4
JournalOptics Letters
Volume44
Issue number21
DOIs
Publication statusPublished - Nov 1 2019

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low frequencies
Raman spectra
excitation
microscopy
dwell
acousto-optics
delay lines
shot noise
pixels
filters
shift
high resolution

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Raanan, D., Audier, X., Shivkumar, S., Asher, M., Menahem, M., Yaffe, O., ... Oron, D. (2019). Sub-second hyper-spectral low-frequency vibrational imaging via impulsive Raman excitation. Optics Letters, 44(21), 5153-5156. https://doi.org/10.1364/OL.44.005153

Sub-second hyper-spectral low-frequency vibrational imaging via impulsive Raman excitation. / Raanan, Dekel; Audier, Xavier; Shivkumar, Siddarth; Asher, Maor; Menahem, Matan; Yaffe, Omer; Forget, Nicolas; Rigneault, Hervé; Oron, Dan.

In: Optics Letters, Vol. 44, No. 21, 01.11.2019, p. 5153-5156.

Research output: Contribution to journalArticle

Raanan, D, Audier, X, Shivkumar, S, Asher, M, Menahem, M, Yaffe, O, Forget, N, Rigneault, H & Oron, D 2019, 'Sub-second hyper-spectral low-frequency vibrational imaging via impulsive Raman excitation', Optics Letters, vol. 44, no. 21, pp. 5153-5156. https://doi.org/10.1364/OL.44.005153
Raanan D, Audier X, Shivkumar S, Asher M, Menahem M, Yaffe O et al. Sub-second hyper-spectral low-frequency vibrational imaging via impulsive Raman excitation. Optics Letters. 2019 Nov 1;44(21):5153-5156. https://doi.org/10.1364/OL.44.005153
Raanan, Dekel ; Audier, Xavier ; Shivkumar, Siddarth ; Asher, Maor ; Menahem, Matan ; Yaffe, Omer ; Forget, Nicolas ; Rigneault, Hervé ; Oron, Dan. / Sub-second hyper-spectral low-frequency vibrational imaging via impulsive Raman excitation. In: Optics Letters. 2019 ; Vol. 44, No. 21. pp. 5153-5156.
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