Optical cross-correlator based on supercontinuum generation

Supercontinuum Generation In Optical Fibres

In this work, a high power Ytterbium pump laser was used in a quasicontinuous wave (CW) pump scheme to generate supercontinua in two different optical fibres, a depressed cladding, graded index highly nonlinear fibre (HNLF), and a solid core photonic crystal fibre (PCF). Pumping a 300 m length of the HNLF with a peak pump power of 140 W, a continuum with a spectral flatness of 5 dB over 1000 nm...

Supercontinuum generation with optical vortices.

We employ an optical vortex beam for the generation of femtosecond supercontinuum in a solid state medium. We demonstrate that the continuum generation process is initiated by the filamentation of the vortex, resulting in a spatially divergent continuum. Despite the strong self-focusing and the formation of multiple hot-spots along the vortex ring, the singularity is preserved in both the near-...

Supercontinuum-based 10-GHz flat-topped optical frequency comb generation.

The generation of high-repetition-rate optical frequency combs with an ultra-broad, coherent and smooth spectrum is important for many applications in optical communications, radio-frequency photonics and optical arbitrary waveform generation. Usually, nonlinear broadening techniques of comb-based sources do not provide the required flatness over the whole available bandwidth. Here we present a...

High-dynamic-range single-shot cross-correlator based on an optical pulse replicator.

The operation of a single-shot cross-correlator based on a pulse replicator is described. The correlator uses a discrete sequence of sampling pulses that are nonlinearly mixed with the pulse under test. The combination of a high reflector and partial reflector replicates an optical pulse by multiple internal reflections and generates a sequence of spatially displaced and temporally delayed samp...

Supercontinuum generation in microstructured fibers and novel optical measurement techniques