Photoionization-induced emission of tunable few-cycle mid-IR dispersive waves in gas-filled hollow-core photonic crystal fiber

Abstract

We propose a scheme for the emission of few-cycle dispersive waves in the mid-infrared using hollow-core photonic crystal fibers filled with noble gas. The underlying mechanism is the formation of a plasma cloud by a self-compressed, sub-cycle pump pulse. The resulting free-electron population modifies the fiber dispersion, allowing phase-matched access to dispersive waves at otherwise inaccessible frequencies, well into the mid-IR. Remarkably, the pulses generated turn out to have durations of the order of two optical cycles. In addition, this ultrafast emission, which occurs even in the absence of a zero dispersion point between pump and mid-IR wavelengths, is tunable over a wide frequency range simply by adjusting the gas pressure. These theoretical results pave the way to a new generation of compact, fiber-based sources of few-cycle mid-IR radiation.

arXiv comment5 pages, 4 figures

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Cited by in corpus (12)

• Hybrid photonic-crystal fiber
• Deep-UV to mid-IR supercontinuum generation driven by mid-IR ultrashort pulses in a gas-filled fiber
• Novel mid-infrared dispersive wave generation in gas-filled PCF by transient ionization-driven changes in dispersion
• Noise and spectral stability of deep-UV gas-filled fiber-based supercontinuum sources driven by ultrafast mid-IR pulses
• Multi-stage generation of extreme ultraviolet dispersive waves by tapering gas-filled hollow-core anti-resonant fibers
• PHz-wide spectral interference through coherent plasma-induced fission of higher-order solitons
• Photoionization-assisted, high-efficiency emission of dispersive wave in gas-filled hollow-core photonic crystal fibers
• Tunable frequency-up/down conversion in gas-filled hollow-core photonic crystal fibers
• Measuring laser carrier-envelope phase effects in the noble gases with an atomic hydrogen calibration standard
• Ultra-broadband supercontinuum generation in gas-filled photonic-crystal fibers: The epsilon-near-zero regime
• Photoionization-induced broadband dispersive wave generated in an Ar-filled hollow-core photonic crystal fiber
• High Conversion Efficiency in Multi-mode Gas-filled Hollow-core Fiber