Noise measurements and noise statistical properties investigations in a stimulated raman scattering microscope based on three femtoseconds laser sources

HIGHLIGHTS

SUMMARY

Stimulated Raman scattering is a dissipative process in which energy is transferred from input photons to molecular vibrations. The authors note that being the shot noise, a detected light intrinsic property, the best experimental condition is obtained when the shot noise is the dominant noise contribution. When the optical power is of the order of several milliwatts, the thermal noise is negligible compared to the shot noise, so in SRS, by using low-intensity laser noise and beam modulation frequencies at frequencies above 1 MHz, the shot noise regime can be obtained. Since the . . .

 



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