Mid-infrared dispersive wave generation in gas-filled photonic crystal fibre by transient ionization-driven changes in dispersion

Köttig, Felix; Novoa, David; Tani, Francesco; Günendi, M. C.; Cassataro, Marco; Travers, John C.; Russell, P. St. J.

doi:10.1038/s41467-017-00943-4

Cited by 69 publications

(48 citation statements)

References 44 publications

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“…In this way a pulse with a few µJ of energy and a duration of few tens of fs can be compressed down to (or even below) a single optical cycle. At such a temporal focus the peak intensity is high enough to ionize the gas [8].…”

Section: Methodsmentioning

confidence: 99%

Long-Lived Refractive-Index Changes Induced by Femtosecond Ionization in Gas-Filled Single-Ring Photonic-Crystal Fibers

et al. 2018

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We investigate refractive index changes caused by femtosecond photoionization in a gas-filled hollow-core photonic crystal fiber. Using spatially-resolved interferometric side-probing, we find that these changes live for tens of microseconds after the photoionization event -eight orders of magnitude longer than the pulse duration. Oscillations in the megahertz frequency range are simultaneously observed, caused by mechanical vibrations of the thin-walled capillaries surrounding the hollow core. These two non-local effects can affect the propagation of a second pulse that arrives within their lifetime, which works out to repetition rates of tens of kilohertz. Filling the fiber with an atomically lighter gas significantly reduces ionization, lessening the strength of the refractive index changes. The results will be important for understanding the dynamics of gasbased fiber systems operating at high intensities and high repetition rates, when temporally non-local interactions between successive laser pulses become relevant. I.

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Section: Methodsmentioning

confidence: 99%

Long-Lived Refractive-Index Changes Induced by Femtosecond Ionization in Gas-Filled Single-Ring Photonic-Crystal Fibers

et al. 2018

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“…The first one is an induced blue-shift effect in the spectrum. The second is an impact on the emission of a resonant dispersive wave [129] in the deep-UV or mid-IR spectral ranges [131,132].…”

Section: Photo-induced Plasmamentioning

confidence: 99%

Hollow-Core Fiber Technology: The Rising of “Gas Photonics”

Debord

Amrani

Vincetti

et al. 2019

Fibers

159

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Since their inception, about 20 years ago, hollow-core photonic crystal fiber and its gas-filled form are now establishing themselves both as a platform in advancing our knowledge on how light is confined and guided in microstructured dielectric optical waveguides, and a remarkable enabler in a large and diverse range of fields. The latter spans from nonlinear and coherent optics, atom optics and laser metrology, quantum information to high optical field physics and plasma physics. Here, we give a historical account of the major seminal works, we review the physics principles underlying the different optical guidance mechanisms that have emerged and how they have been used as design tools to set the current state-of-the-art in the transmission performance of such fibers. In a second part of this review, we give a nonexhaustive, yet representative, list of the different applications where gas-filled hollow-core photonic crystal fiber played a transformative role, and how the achieved results are leading to the emergence of a new field, which could be coined “Gas photonics”. We particularly stress on the synergetic interplay between glass, gas, and light in founding this new fiber science and technology.

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“…The pulses can, however, be compressed to 25 fs in a first PCF stage and then to <4 fs in a second stage. This two-stage design has the advantage that it provides 25 fs pulses useful in many other applications, for example generation of ultraviolet or mid-infrared pulses at high repetition rates [18,22,23]. In the experiment reported here, the pump laser was operated at repetition rates of 1, 4.8 and 9.6 MHz.…”

Section: Pulse Compression From >320 Fs To 25 Fsmentioning

confidence: 99%

Efficient single-cycle pulse compression of an ytterbium fiber laser at 10 MHz repetition rate

et al. 2020

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Over the past years, ultrafast lasers with average powers in the 100 W range have become a mature technology, with a multitude of applications in science and technology. Nonlinear temporal compression of these lasers to few-or even single-cycle duration is often essential, yet still hard to achieve, in particular at high repetition rates. Here we report a two-stage system for compressing pulses from a 1030 nm ytterbium fiber laser to single-cycle durations with 5 μJ output pulse energy at 9.6 MHz repetition rate. In the first stage, the laser pulses are compressed from 340 to 25 fs by spectral broadening in a krypton-filled single-ring photonic crystal fiber (SR-PCF), subsequent phase compensation being achieved with chirped mirrors. In the second stage, the pulses are further compressed to singlecycle duration by soliton-effect self-compression in a neon-filled SR-PCF. We estimate a pulse duration of ~3.4 fs at the fiber output by numerically back-propagating the measured pulses. Finally, we directly measured a pulse duration of 3.8 fs (1.25 optical cycles) after compensating (using chirped mirrors) the dispersion introduced by the optical elements after the fiber, more than 50% of the total pulse energy being in the main peak. The system can produce compressed pulses with peak powers >0.6 GW and a total transmission exceeding 70%.

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Mid-infrared dispersive wave generation in gas-filled photonic crystal fibre by transient ionization-driven changes in dispersion

Cited by 69 publications

References 44 publications

Long-Lived Refractive-Index Changes Induced by Femtosecond Ionization in Gas-Filled Single-Ring Photonic-Crystal Fibers

Long-Lived Refractive-Index Changes Induced by Femtosecond Ionization in Gas-Filled Single-Ring Photonic-Crystal Fibers

Hollow-Core Fiber Technology: The Rising of “Gas Photonics”

Efficient single-cycle pulse compression of an ytterbium fiber laser at 10 MHz repetition rate

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