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Journal ArticleDOI

90 GW peak power few-cycle mid-infrared pulses from an optical parametric amplifier

TLDR
A compact 20 Hz repetition-rate mid-IR OPCPA system operating at a central wavelength of 3900 nm with the tail-to-tail spectrum extending over 600 nm and delivering 8 mJ pulses that are compressed to 83 fs opens a range of unprecedented opportunities for tabletop ultrafast science.
Abstract
We demonstrate a compact 20 Hz repetition-rate mid-IR OPCPA system operating at a central wavelength of 3900 nm with the tail-to-tail spectrum extending over 600 nm and delivering 8 mJ pulses that are compressed to 83 fs (<7 optical cycles). Because of the long optical period (∼13 fs) and a high peak power, the system opens a range of unprecedented opportunities for tabletop ultrafast science and is particularly attractive as a driver for a highly efficient generation of ultrafast coherent x-ray continua for biomolecular and element specific imaging.

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Citations
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Journal ArticleDOI

Ultrabroadband XFROG of few-cycle mid-infrared pulses by four-wave mixing in a gas

TL;DR: In this article, a cross-correlation frequency-resolved optical gating (XFROG) based on four-wave mixing (FWM) in a gas medium is shown to enable dispersion-free characterization of few-cycle mid-infrared (mid-IR) pulses tunable within a spectral range of more than two octaves.
Journal ArticleDOI

Theoretical investigations of broadband mid-infrared optical parametric amplification based on a La 3 Ga 5.5 Nb 0.5 O 14 crystal.

TL;DR: It is found that this positive uniaxial crystal La3Ga5.5Nb0.5O14 (LGN), which exhibits a favorable set of optical properties for the application in a mid-IR OPA, can support broadband amplifications across its entire mid-infrared transparent region up to 6 μm, outperforming other commonly-used mid- Infrared crystals in terms of gain bandwidth.
Journal ArticleDOI

Dynamics of CO(2) laser pulse filamentation in air influenced by spectrally selective molecular absorption.

TL;DR: The theoretical aspects of self-focusing and filamentation of high-power pulsed CO(2) laser radiation with carrier wavelength 10.6 μm in air are considered and the spectrally selective molecular absorption of realistic atmospheric air is included in the theoretical model.
Journal ArticleDOI

Relativistic interaction of long-wavelength ultrashort laser pulses with nanowires.

TL;DR: In this article, a new regime of a relativistic light-matter interaction employing mid-infrared (3.9-micrometer wavelength) high-intensity femtosecond laser pulses was reported, where about 80% of the incident laser energy has been absorbed resulting in a long living, keV-temperature, high charge state plasma with a density of more than three orders of magnitude above the critical value.
Journal ArticleDOI

Multioctave supercontinua and subcycle lightwave electronics [Invited]

TL;DR: The term “supercontinuum generation” has been seamlessly extended, thanks to its all-embracing character, to include very-high-order and nonperturbative nonlinear optical processes and now applies to ultrabroadband field waveform generation in the ultraviolet and x-ray ranges, as well as high-harmonic attosecond and zeptosecond supercontinua.
References
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Journal ArticleDOI

The attosecond nonlinear optics of bright coherent X-ray generation

TL;DR: In this paper, the Roentgen X-ray tube was used for high-order harmonic generation with small-scale femtosecond laser technology, which combines the microscopic attosecond science of atoms driven by intense laser fields with the macroscopic extreme nonlinear optics of phase matching.
Journal ArticleDOI

Infrared Two-Color Multicycle Laser Field Synthesis for Generating an Intense Attosecond Pulse

TL;DR: The proposed method enables the requirements for the pump pulse duration to be relaxed but also to reduce ionization of the harmonic medium, which opens the door to create an intense isolated attosecond pulse using a conventional femtosecond laser system.
Journal ArticleDOI

Mid-IR short-pulse OPCPA with micro-Joule energy at 100kHz

TL;DR: A novel mid-IR source based on optical parametric chirped pulse amplification (OPCPA) generating 96 fs pulses (9.0 cycles) at 3.2 mm with an energy of 1.2 microJ, at a repetition rate of 100 kHz is presented.
Journal ArticleDOI

Self-compression of millijoule 1.5 microm pulses.

TL;DR: In this article, the authors demonstrate a four-stage optical parametric chirped-pulse amplification system that delivers carrier-envelope phase-stable approximately 1.5 microm pulses with energies up to 12.5 mJ before recompression.
Journal ArticleDOI

Efficient continuum generation exceeding 200 eV by intense ultrashort two-color driver.

TL;DR: Results indicate the possibility to produce bright attosecond pulses approaching the soft X spectral region and contribute to significantly extending the harmonic emission to higher photon energies, whereas the VIS pulse improves the conversion efficiency of the process.
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