Nonlinear interaction between spatial modes inside a single Ar filled hollow-capillary fiber (HCF) compresses 1mJ, 175-fs IR pulses directly to 20 µJ, 4.6 fs in the VIS (~2 cycles) without post-compression. Employing two cascaded HCFs with 70% total throughput generates smooth, high-brightness supercontinua as a platform for subsequent multioctave frequency conversion.
Supercontinua from Multimodal HCFs
Piccoli, R.;
2023-01-01
Abstract
Nonlinear interaction between spatial modes inside a single Ar filled hollow-capillary fiber (HCF) compresses 1mJ, 175-fs IR pulses directly to 20 µJ, 4.6 fs in the VIS (~2 cycles) without post-compression. Employing two cascaded HCFs with 70% total throughput generates smooth, high-brightness supercontinua as a platform for subsequent multioctave frequency conversion.
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