Fig. 2: Source output spectrum.
From: Thermal light with enhanced oscillating bunching in field-tested photon-counting LIDAR
a Unfiltered output spectrum of the thermal light source (dark blue curve) with intensity displayed on the left y-axis.Transmission spectra of the bandpass filter (solid black line) and etalon (dashed black line) with transmission displayed on the right y-axis. b Fully filtered output spectrum of the thermal source, used for measuring.
