Fig. 5: Modulation instability comb generation and upconversion.
From: Ultrabroadband milliwatt-level resonant frequency doubling on a chip
A Generated MI comb (bottom) and its upconverted spectrum (top), with a pump power of 1.6 W. The shaded area corresponds to the upconverted spectrum extent. B Accumulated optical spectra of FH (bottom) and SH (top) for varying north heater power. A crossover from Turing patterns to the broadband MI comb can be observed in combination with a decrease of the overall generated power. C Selected spectra from (B).
