Fig. 1: Experimental setup.
From: Quantitative analysis of the intensity distribution of optical rogue waves
Pulsed 400 nm light is used to pump parametric down-conversion (PDC) in two cascaded barium borate (BBO) crystals. Depending on the phase-matching angle of the crystals, either (a) bright squeezed vacuum (BSV) is generated via degenerate PDC at 800 nm, or (b) thermal light is generated via non-degenerate PDC at 710 nm. These two types of light are filtered by a band-pass filter at 710 ± 5 nm for thermal light or at 800 ± 5 nm for BSV, and used to generate supercontinuum in a single-mode fiber. The resulting intensity is measured (PD) after spectrally filtering the supercontinuum by a monochromator.
