High-power sub-two-cycle mid-infrared pulses at 100 MHz repetition rate
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Tipus de documentArticle
Data publicació2015-09-21
EditorNature Publishing Group
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Abstract
Powerful coherent light with a spectrum spanning the mid-infrared (MIR) spectral range is crucial for a number of applications in natural as well as life sciences, but so far has only been available from large-scale synchrotron sources1. Here we present a compact apparatus that generates pulses with a sub-two-cycle duration and with an average power of 0.1 W and a spectral coverage of 6.8–16.4 μm (at −30 dB). The demonstrated source combines, for the first time in this spectral region, a high power, a high repetition rate and phase coherence. The MIR pulses emerge via difference-frequency generation (DFG) driven by the nonlinearly compressed pulses of a Kerr-lens mode-locked ytterbium-doped yttrium–aluminium–garnet (Yb:YAG) thin-disc oscillator. The resultant 100 MHz MIR pulse train is hundreds to thousands of times more powerful than state-of-the-art frequency combs that emit in this range2, 3, 4, and offers a high dynamic range for spectroscopy in the molecular fingerprint region4, 5, 6, 7 and an ideal prerequisite for hyperspectral imaging8 as well as for the time-domain coherent control of vibrational dynamics
ISSN1749-4885
Versió de l'editorhttp://www.nature.com/nphoton/journal/v9/n11/full/nphoton.2015.179.html
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Fitxers | Descripció | Mida | Format | Visualitza |
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nphoton.2015.179.pdf | 2,923Mb | Accés restringit |