Multi-octave supercontinuum from mid-IR filamentation in bulk

Details Multi-octave supercontinuum from mid-IR filamentation in bulk Multi-octave supercontinuum from mid-IR filamentation in bulk

2011-10-25

arxiv.org/abs/1110.5430v1

Physics

Optics

4 pages, 3 figures

Scientific paper

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

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