Scarcelli, GiulianoYun, Seok-Hyun2013-04-222011Scarcelli, Giuliano, and Seok Hyun Yun. 2011. Multistage VIPA etalons for high-extinction parallel Brillouin spectroscopy. Optics Express 19(11): 10913-10922.1094-4087http://nrs.harvard.edu/urn-3:HUL.InstRepos:10579119We demonstrate a high-resolution high-extinction parallel spectrometer for Brillouin spectroscopy of turbid samples. Cascading multiple VIPA etalons in the cross-axis configuration allowed us to achieve a high extinction ratio of up to 80 dB with sub-GHz resolution. Using a three-stage VIPA, we obtained the Brillouin spectra from Intralipid solutions at concentrations up to 10%.en-USJournal Article2013-04-2210.1364/OE.19.010913