<p>Impulsive stimulated Raman spectroscopy using a chirped broadband probe pulse (broadband ISRS) has attracted significant attention due to its numerous advantages over spontaneous Raman spectroscopy, stimulated Raman spectroscopy (SRS), and ISRS with a probe pulse spectrally degenerate with the Raman pump pulse (degenerate ISRS). In this article, we present a non-mathematical perspective on ISRS, covering its machinery and applications. In particular, we demonstrate how broadband ISRS can extract a tiny Raman signal from a strong fluorescence background, both having the same Stokes shift.</p> Graphical abstract <p>The usefulness of broadband impulsive stimulated Raman spectroscopy over conventional approaches for isolating a feeble Raman signal with the same Stokes shift as a strong fluorescence background is demonstrated.</p>

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Broadband impulsive stimulated Raman spectroscopy: A fluorescence-background-free alternative to conventional Raman spectroscopy

  • Shaina Dhamija,
  • Garima Bhutani,
  • Arijit K De

摘要

Impulsive stimulated Raman spectroscopy using a chirped broadband probe pulse (broadband ISRS) has attracted significant attention due to its numerous advantages over spontaneous Raman spectroscopy, stimulated Raman spectroscopy (SRS), and ISRS with a probe pulse spectrally degenerate with the Raman pump pulse (degenerate ISRS). In this article, we present a non-mathematical perspective on ISRS, covering its machinery and applications. In particular, we demonstrate how broadband ISRS can extract a tiny Raman signal from a strong fluorescence background, both having the same Stokes shift.

Graphical abstract

The usefulness of broadband impulsive stimulated Raman spectroscopy over conventional approaches for isolating a feeble Raman signal with the same Stokes shift as a strong fluorescence background is demonstrated.