Fig. 2: Spectroscopy using the VIPA.
a Measured signal intensity as a function of the position of the VIPA output fiber for eight spectral modes separated by Δν = 6.5 GHz (dots) created by shifting the laser frequency, and simulation results (solid lines). b Spectrum for twenty idler modes created by the SPDC source (dots) as measured using the VIPA setup, and simulation results (solid line). c Transmission profile of the Fabry–Pérot filter cavity operating in the range of 795 nm (dots: measured data; solid line: fit). d Spectrum of the 795 nm signal photons measured by detuning the 6.1 GHz filter cavity (dots), simulated frequency comb with 6.5 GHz mode spacing (light blue line), and its convolution (dark blue line) with the cavity profile shown in (c) (green curve). e A table mentions which specific parts of the setup shown in Fig. 1 were used for the different measurements shown in this figure.
