Shot-to-shot and average absolute photon flux measurements of a femtosecond laser high-order harmonic photon source

Details Shot-to-shot and average absolute photon flux measurements of a femtosecond laser high-order harmonic photon source Shot-to-shot and average absolute photon flux measurements of a femtosecond laser high-order harmonic photon source

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011njph...13i3003l&link_type=abstract

New Journal of Physics, Volume 13, Issue 9, pp. 093003 (2011).

Physics

Scientific paper

The absolute flux of a femtosecond vacuum-ultraviolet (VUV) photon source based on the high-order harmonic generation of a femtosecond Ti:sapphire laser and monochromatized with a grating monochromator is determined both on a shot-to-shot basis and averaged over seconds by a calibrated gas monitor detector. The average flux is compared with the average flux as determined with a calibrated GaAsP semiconductor photodiode. We found that the photodiode is a reliable and easy-to-use tool for estimating the order of magnitude of the average photon flux but that, due to saturation losses, it underestimates the average flux by up to -15%.

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