We describe the construction of a rapid continuous-wave-stimulated-Brillouin-scattering (CW-SBS) spectrometer. The spectrometer employs single-frequency diode-lasers and an atomic vapor notch-filter to acquire transmission spectra of turbid/non-turbid samples with high spectral-resolution at speeds up to 100-fold faster than those of existing CW-SBS spectrometers. This improvement enables high-speed Brillouin material analysis.
Remer, I., Cohen, L., Bilenca, A. High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis. J. Vis. Exp. (127), e55527, doi:10.3791/55527 (2017).