Abstract

A simplified theoretical analysis of the S/N performance of Fourier transform (FT) Raman spectrometers compared with conventional scanning machines is presented. Calculations indicate that the multiplex gain may be significantly degraded due to the shot noise from the Raman signal, and this situation is exacerbated when Rayleigh radiation reaches the detector. It is expected that use of detectors with a noise equivalent power of 10⁻¹⁵ W would largely eliminate any multiplex gain in FT-Raman spectroscopy.

Signal-to-noise ratio in Fourier spectroscopy

Richard R. Treffers
Appl. Opt. 16(12) 3103-3106 (1977)

Noise considerations, signal magnitudes, and detection limits in a hollow cathode discharge by optogalvanic spectroscopy

Richard A. Keller and Edward F. Zalewski
Appl. Opt. 19(19) 3301-3305 (1980)

Linear optics, Raman scattering, and spin noise spectroscopy

M. M. Glazov and V. S. Zapasskii
Opt. Express 23(9) 11713-11723 (2015)

Signal-to-noise considerations in fiber links with periodic or distributed optical amplification

Amnon Yariv
Opt. Lett. 15(19) 1064-1066 (1990)

Signal-to-noise and radiation exposure considerations in conventional and diffraction x-ray microscopy

Xiaojing Huang, Huijie Miao, Jan Steinbrener, Johanna Nelson, David Shapiro, Andrew Stewart, Joshua Turner, and Chris Jacobsen
Opt. Express 17(16) 13541-13553 (2009)