Theory of photoionization-induced blueshift of ultrashort solitons in gas-filled hollow-core photonic crystal fibers

Mohammed Fathy Saleh, Wonkeun Chang, Philipp Hoelzer, Alexander Nazarkin, John C. Travers, Nicolas Y. Joly, Philip St. J. Russell, Fabio Biancalana

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We show theoretically that the photoionization process in a hollow-core photonic crystal fiber filled with a Raman-inactive noble gas leads to a constant acceleration of solitons in the time domain with a continuous shift to higher frequencies, limited only by ionization loss. This phenomenon is opposite to the well-known Raman self-frequency redshift of solitons in solid-core glass fibers. We also predict the existence of unconventional long-range nonlocal soliton interactions leading to spectral and temporal soliton clustering. Furthermore, if the core is filled with a Raman-active molecular gas, spectral transformations between redshifted, blueshifted, and stabilized solitons can take place in the same fiber.

Original languageEnglish
Article number203902
Pages (from-to)-
Number of pages5
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 7 Nov 2011

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