An In-Situ Method for the Reconstruction of Ultrashort and Ultrabroadband Synthesized Light Transients
2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)(2023)
Abstract
We present a novel method for the reconstruction of ultrashort and ultrabroadband synthesized light transients generated by a parametric waveform synthesizer [1]. Our method relies on the measurement of the third-order nonlinear response (
$S_{NL}$
) of a noble gas target normally used for high-harmonic generation (1 mm length at 0.1-1 bar) while scanning the relative delay
$\tau$
between the two constituent ultrabroadband pulses
$(E_{1}(t)$
and
$E_{2}(t))$
that are synthesized (c.f. Fig. 1(d)). The recorded spectrogram can be described by
$S_{NL}(f,\tau)\propto T(f)\vert FT[(E_{1}(t)+E_{2}(t+\tau))^{3}]\vert^{2}$
, where
$T(f)$
describes a spectral transfer function and
$FT$
denotes the Fourier transform.
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Key words
1 mm length,high-harmonic generation,In-Situ Method,NL,noble gas target,parametric waveform synthesizer,pressure 0.1 bar to 1.0 bar,relative delay τ,size 1.0 mm,third-order nonlinear response,ultrabroadband synthesized light transients
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