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In supercontinuum generation, various propa- gation effects combine toproduce a dramatic spec- tral broadening of intense ultrashort optical pulseswith far reaching possibilities. Different applications place highly divergentand challenging demands on source characteristics such as spectral coveragefrom the ultraviolet (UV) across the visible (VIS) to the near-infrared (NIR),and into the mid-infrared (MIR). Shot-to-shot repeatability, high spectralenergy density, an absence of complicated or non-deterministic pulse splittingare also essential for many applications. Here we present an "all in one"solution with the first supercontinuum in bulk covering the broad- estbandwidth from just above UV far into the MIR. The spectrum spans more thanthree octaves, carries high spectral energy density (3pJ up to 10 nJ pernanometer), has high shot-to-shot reproducibility, and is carrier-to-envelopephase (CEP) stable. Our method, based on filamentation of a femtosecond MIRpulse in the anoma- lous dispersion regime, allows for a new class of simpleand compact supercontinuum sources.

Multi-octave supercontinuum from mid-IR filamentation in bulk