EOSAM 2022
Open Access

Fig. 2


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FWHM duration (top row) and ratio of output to input peak power (bottom row) of the self-compressed pulses as a function of the input energy and the equivalent constant pressure (see text) in both a statically filled or a negatively pumped 3 m long, 100 μm core radius HCF filled with Ne (left) or N2 (right). The solid black lines represent the contour lines where L = Lav, which run along the optimal region for self-compression in a decreasing pressure gradient. Note the one order of magnitude change in the pressure range from Ne to N2 owing to their different dispersion and nonlinearity.

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