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Schematic of the homodyne Michelson interferometer. λ/2: half waveplate, λ/4: quarter waveplate, PBS: polarizing beam splitter, NPBS: non-polarizing beam splitter, PD: photodetector, DAQ: data acquisition card, Piezo: piezoelectric nanopositioner, Stepper: piezoelectric stepper stage. The bandpass filter is used to reduce the optical spectrum bandwidth of the pulsed laser for some measurements, as described in Section 3.
