This is why a group of researchers from Aix Marseille Universit?developed a spectrally resolved characterization technique based on a supercontinuum source and a laser line tunable filter.
12.
In another approach ( Toptica / iChrome ) the supercontinuum is generated in the infra-red and then converted at a single selectable wavelength into the visible regime.
13.
The first demonstration of a fibre-based supercontinuum pumped by a fibre-based laser was reported by Chernikov " et al . " in 1997.
14.
Many of the commercially-available supercontinuum sources are pumped by long pulses and, therefore, tend to have relatively significant pulse-to-pulse spectral fluctuations.
15.
Complete single-shot spectral profiles of modulation instability and supercontinuum have been mapped into the time domain with the TS-DFT for capture at megahertz repetition rates.
16.
The first supercontinuum generated in PCF operated in this regime and many of the subsequent experiments also made use of ultra-short pulsed femtosecond systems as a pump source.
17.
Supercontinuum sources driven by ultrashort pump pulses ( on the order of tens of femtoseconds in duration or less ) are generally much more stable than those pumped by longer pulses.
18.
Even though such supercontinuum sources may make use of anomalous or zero dispersion, the propagation lengths are usually short enough that noise-seeded modulation instability has a less significant impact.
19.
Both the pump power and input noise level are influential in the supercontinuum generation process, determining, e . g ., the broadening factor and the onset of soliton-fission.
20.
Based on such time-averaged measurements, the spectral profile of the supercontinuum generally appears smooth and relatively featureless, whereas, the spectrum of a single pulse may be highly structured in comparison.
