Simplified approach to low-frequency coherent anti-Stokes Raman spectroscopy using a sharp spectral edge filter

Liqing Ren, Maor Asher, Omer Yaffe, Yaron Silberberg, Dan Oron

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Coherent anti-Stokes Raman scattering (CARS) has found wide applications in biomedical research. Compared with alternatives, single-beam CARS is especially attractive at low frequencies. Yet, currently existing schemes necessitate a relatively complicated setup to perform high-resolution spectroscopy. Here we show that the spectral sharp edge formed by an ultra-steep long-pass filter is sufficient for performing CARS spectroscopy, simplifying the system significantly. We compare the sensitivity of the presented methodology with available counterparts both theoretically and experimentally. Importantly, we show that this method, to the best of our knowledge, is the simplest and most suitable for vibrational imaging and spectroscopy in the very low-frequency regime (<200 cm−1).

Original languageEnglish
Pages (from-to)3637-3640
Number of pages4
JournalOptics Letters
Volume44
Issue number15
DOIs
Publication statusPublished - Aug 1 2019

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Raman spectroscopy
Raman spectra
low frequencies
filters
spectroscopy
very low frequencies
methodology
sensitivity
high resolution

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Simplified approach to low-frequency coherent anti-Stokes Raman spectroscopy using a sharp spectral edge filter. / Ren, Liqing; Asher, Maor; Yaffe, Omer; Silberberg, Yaron; Oron, Dan.

In: Optics Letters, Vol. 44, No. 15, 01.08.2019, p. 3637-3640.

Research output: Contribution to journalArticle

Ren, Liqing ; Asher, Maor ; Yaffe, Omer ; Silberberg, Yaron ; Oron, Dan. / Simplified approach to low-frequency coherent anti-Stokes Raman spectroscopy using a sharp spectral edge filter. In: Optics Letters. 2019 ; Vol. 44, No. 15. pp. 3637-3640.
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