Abstract

Because of the throughput, multiplex, and calibration advantages of Fourier transform (FT) infrared spectroscopy, renewed interest has arisen in developing FT-Raman techniques for extended applications in the chemical, physical, and biophysical areas. The ability to use a single interferometer with the appropriate accessories for obtaining either infrared or Raman spectra adds further to the allure and potential of this new spectroscopic approach. As a result of the broad frequency range accessible to an interferometer, FT-Raman spectra can be collected with the use of a variety of laser excitation sources ranging from the visible (488 nm and 647.1 nm, for example) to near-infrared (1064 nm) wavelengths. Excitation at longer wavelengths often provides the significant advantage of yielding Raman spectra which are free from fluorescence effects.

1064  nm dispersive Raman spectroscopy of tissues with strong near-infrared autofluorescence

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Chiara Lindner, Jachin Kunz, Simon J. Herr, Sebastian Wolf, Jens Kießling, and Frank Kühnemann
Opt. Express 29(3) 4035-4047 (2021)