Ultrabroadband supercontinuum generation through filamentation in a lead fluoride crystal

Spectral manipulation in a high-power ultrafast fiber laser system generating ultrashort pulses with GHz repetition rate

“…There exist mainly two approaches to generate ultrafast fiber laser at 1.1 μm: supercontinuum generation using highly nonlinear fibers [19][20][21][22][23] , or wavelength shifting inside or outside the laser cavities through nonlinear effects such as stimulated Raman scattering (SRS) [24][25][26][27] . The former approach manifests low power spectral density, and only a limited portion of the supercontinuum wavelength range is useful.…”

The role of external focusing in spectral enrichment under mid-IR laser filamentation in dielectrics

“…Therefore, new high-power laser sources in the mid-IR region are being created [22][23][24]. One of the most attractive transparent media for supercontinuum and harmonics generation is fluorides due to their several-octave-width spectrum [5,25]. As it was shown in [26], in CaF 2 harmonics generation together with self-phase and cross-phase modulation allow significantly enrich a supercontinuum spectrum.…”