Real time noise and wavelength correlations in octave-spanning supercontinuum generation.
We use dispersive Fourier transformation to measure shot-to-shot spectral instabilities in femtosecond supercontinuum generation. We study both the onset phase of supercontinuum generation with distinct dispersive wave generation, as well as a highly-unstable supercontinuum regime spanning an octave in bandwidth. Wavelength correlation maps allow interactions between separated spectral components to be identified, even when such interactions are not apparent in shot-to-shot or average measurements. Experimental results are interpreted using numerical simulations. Our results show the clear advantages of dispersive Fourier transformation for studying spectral noise during supercontinuum generation.
Institut FEMTO-ST, UMR 6174 CNRS-Université de Franche-Comté, 25030 Besançon, France. thomas.godin@femto-st.fr
T
T
Godin
B
B
Wetzel
T
T
Sylvestre
L
L
Larger
A
A
Kudlinski
A
A
Mussot
A
A
Ben Salem
M
M
Zghal
G
G
Genty
F
F
Dias
J M
JM
Dudley
D000465:Algorithms; D003198:Computer Simulation; D003199:Computer Systems; D008027:Light; D008029:Lighting / Q000379:methods*; D008962:Models, Theoretical; D012542:Scattering, Radiation; D059629:Signal-To-Noise Ratio