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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Am J Ophthalmol. 2019 Feb 15;202:118–125. doi: 10.1016/j.ajo.2019.02.010

Figure 1:

Figure 1:

Schematic of the Brillouin system. The system is composed of three parts: a light source, a human scanning interface built on a modified slit-lamp platform, and a two-stage VIPA spectrometer using two crossed-axis VIPA etalons. Human interface: PMF: polarization maintaining single-mode fiber; SMF: single mode fiber; λ/2: half waveplate; λ/4: quarter-waveplate; M: mirror; Obj. L: objective lens; PBS: polarizing beam-splitter; S1/S2: optical shutters; Ref: reference materials; Spectrometer: C1/C2: cylindrical lens; A1/A2: achromatic lens; S1/S2: shutters; V1/V2: VIPAs; EMCCD: electron multiplying charge-coupled device;