Spectrally resolved measurements of noise in resonant nitrogen coherent anti-Stokes Raman spectroscopy (CARS) are presented for three pump laser bandwidths. The experimental noise curves are compared with those calculated from a simple model involving statistically independent Stokes modes. The sources of noise in both resonant and nonresonant CARS spectra are discussed.
D. R. Snelling, T. Parameswaran, and G. J. Smallwood, "Noise characteristics of single-shot broadband CARS signals," Appl. Opt. 26, 4298-4302 (1987)