High-energy mid-infrared sub-cycle pulse synthesis from a parametric amplifier

Liang, Houkun; Krogen, Peter; Wang, Zhou; Park, Hyunwook; Kroh, Tobias; Zawilski, Kevin T.; Schunemann, Peter G.; Moses, Jeffrey; DiMauro, Louis F.; Kärtner, Franz X.; Hong, Kyung-Han

doi:10.1038/s41467-017-00193-4

Cited by 148 publications

(63 citation statements)

References 45 publications

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“…Some other methods, such as difference frequency generation (DFG) [19], adiabatic DFG [20], non-degenerate four-wave-mixing [21][22][23] and optical rectification [24][25][26], have attained microjoule level pulse energy, not sufficient for strong-field applications. There are also some post-processing methods, such as post compression [27,28] or synthesis [29], that are often more complex than direct generation methods. In other words, the generation of coherent, ultra-intense IR pulses is still an outstanding problem.…”

mentioning

confidence: 99%

Relativistic Single-Cycle Tunable Infrared Pulses Generated from a Tailored Plasma Density Structure

Nie

Pai

Hua

et al. 2018

Frontiers in Optics / Laser Science

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The availability of intense, ultrashort coherent radiation sources in the infrared region of the spectrum is enabling the generation of attosecond X-ray pulses via high harmonic generation, pumpprobe experiments in the "molecular fingerprint" region and opening up the area of relativisticinfrared nonlinear optics of plasmas. These applications would benefit from multi-millijoule singlecycle pulses in the mid to long wavelength infrared (LW-IR) region. Here we present a new scheme capable of producing tunable relativistically intense, single-cycle infrared pulses from 5-14 µm with a 1.7% conversion efficiency based on a photon frequency downshifting scheme that uses a tailored plasma density structure. The carrier-envelope phase (CEP) of the LW-IR pulse is locked to that of the drive laser to within a few percent. Such a versatile tunable IR source may meet the demands of many cutting-edge applications in strong-field physics and greatly promote their development.

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mentioning

confidence: 99%

Relativistic Single-Cycle Tunable Infrared Pulses Generated from a Tailored Plasma Density Structure

Nie

Pai

Hua

et al. 2018

Frontiers in Optics / Laser Science

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“…The phase-mismatch along the z-axis, ∆k z , is given by (9) where k 1z , k 2z and k 3z are the projections of the incident and SD wavevectors along z (see Fig. 1b).…”

Section: Fundingmentioning

confidence: 99%

“…Addressing these problems has required precise knowledge of the total spectral response function affecting the measured FROG signal, which includes effects due to the noncollinear geometry, nonlinear crystal thickness and phase matching bandwidth (all carefully chosen for a particular pulse), dispersion of the nonlinearity and detector sensitivity [8]. Noncollinear crosscorrelation FROG (XFROG) was recently used to measure 0.9-cycle, 4.2 µm pulses (12.4 fs) [9], but this required a fully characterized short reference pulse and the geometric time smearing is no longer negligible for few-fs pulses. A variant of spectral phase interferometry for direct electric-field reconstruction (SPI-DER) [10], spatially encoded arrangement (SEA)-SPIDER [11], is free of time smearing and enabled measuring 0.9-cycle pulses at 1.6 µm (4.5 fs) [4].…”

Section: Introductionmentioning

confidence: 99%

Inline self-diffraction dispersion-scan of over octave-spanning pulses in the single-cycle regime

Canhota¹,

Silva²,

Weigand³

et al. 2017

Opt. Lett.

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We present an implementation of dispersion-scan based on self-diffraction (SD d-scan) and apply it to the measurement of over octave-spanning sub-4-fs pulses. The results are compared with second-harmonic generation (SHG) d-scan. The efficiency of the SD process is derived theoretically and compared with the spectral response retrieved by the d-scan algorithm. The new SD d-scan has a robust inline setup and enables measuring pulses with over-octave spectra, single-cycle durations, and wavelength ranges beyond those of SHG crystals, such as the ultraviolet and the deep-ultraviolet.

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“…We generate CEP-stable, 33 µJ, 0.88-cycle mid-IR pulses from a 2.1-µm pumped OPA by coherently synthesizing the passively CEP-stable few-cycle signal and idler pulses with the combined spectrum covering 2.5−9.0 µm [6]. In-line pulse synthesis is realized through a type-I collinear OPA with minimal temporal walk-off in a thin CdSiP2 (CSP) crystal.…”

Section: Mid-infrared Sub-cycle Pulse Synthesizermentioning

confidence: 99%

High-harmonic generation in solids using a mid-infrared sub-cycle pulse synthesizer

Hong

Wang

Kroh

et al. 2017

Frontiers in Optics 2017

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Abstract:We generate high-order harmonics in silicon using a mid-infrared (2.5−9.0 µm) pulse synthesizer. Even and odd harmonics (~19 th order) with few-cycle pulses and near-continuous spectra with sub-cycle pulses, indicating an isolated harmonic emission, are observed.OCIS codes: (320.7110) Ultrafast nonlinear optics; (270.6620) Strong-field processes 1. Introduction High-energy, carrier-envelope phase (CEP)-stable, sub-cycle pulses can provide unique opportunities of exploring isolated phase-sensitive strong-field light-matter interactions in atoms, molecules and solids. At the mid-infrared (mid-IR) wavelength range the Keldysh parameter is much smaller than unity even at relatively modest laser intensities, enabling to study the strong-field sub-cycle electron dynamics in solids via high-harmonic generation (HHG) [1][2][3] without damage as well as the electron tunneling dynamics in nano-devices. These efforts are opening a great opportunity towards petahertz electronics. Regarding the generation of high-energy sub-cycle pulses, pulse synthesis is a very powerful method to overcome the bandwidth limit of conventional laser amplifiers. One can generate and manipulate an optical bandwidth more than one octave by coherently combining ultrashort pulses covering different spectral windows with controlled phase. Single-or sub-cycle pulse synthesizers in the visible-to-near-infrared (IR) spectral region have been demonstrated by coherent multiplexing of pulses from fiber lasers, supercontinuum [4], and optical parametric chirped-pulse amplifiers (OPCPA's) [5]. In this contribution, we present a multi-GW, mid-IR subcycle pulse synthesizer based on an optical parametric amplifier (OPA) and its application to HHG in solids.

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High-energy mid-infrared sub-cycle pulse synthesis from a parametric amplifier

Cited by 148 publications

References 45 publications

Relativistic Single-Cycle Tunable Infrared Pulses Generated from a Tailored Plasma Density Structure

Relativistic Single-Cycle Tunable Infrared Pulses Generated from a Tailored Plasma Density Structure

Inline self-diffraction dispersion-scan of over octave-spanning pulses in the single-cycle regime

High-harmonic generation in solids using a mid-infrared sub-cycle pulse synthesizer

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