Efficient output coupling of intracavity high-harmonic generation
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TLDR
A novel technique for coupling extreme-ultraviolet (XUV) harmonic radiation out of a femtosecond enhancement cavity using a small-period diffraction grating etched directly into the surface of a dielectric mirror is demonstrated.Abstract:
We demonstrate a novel technique for coupling extreme-ultraviolet (XUV) harmonic radiation out of a femtosecond enhancement cavity. We use a small-period diffraction grating etched directly into the surface of a dielectric mirror. For the fundamental light, this element acts as a high reflector. For harmonic wavelengths, it acts as a diffraction grating, coupling XUV radiation out of the cavity. Using this method, we observed the third through twenty-first odd harmonics with a dramatic increase in usable power over previous results of high-harmonic generation at high repetition rates.read more
Citations
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Cavity-enhanced dual-comb spectroscopy
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Direct frequency comb spectroscopy in the extreme ultraviolet
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