Scaling of High-Order Harmonic Generation in the Long Wavelength Limit of a Strong Laser Field

DiChiara, Anthony; Ghimire, Shambhu; Blaga, Cosmin I.; Sistrunk, Emily; Power, E.; March, Anne Marie; Miller, Terry A.; Reis, David A.; Agostini, Pierre; DiMauro, Louis F.

doi:10.1109/jstqe.2011.2158391

Cited by 12 publications

(7 citation statements)

References 59 publications

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“…Laser filamentation, which is self-guidance of a highintensity, ultrashort laser pulse, is a remarkable nonlinear optical phenomenon because of its rich and novel science, and many practical applications [1][2][3][4]. Although laser filamentation has been studied mainly with near-infrared and visible wavelengths, recent advances of laser technology in the mid-infrared (mid-IR) and even the longwavelength infrared (LWIR) [5][6][7][8][9] enable investigation of unexplored wavelength regimes of laser filamentation and nonlinear optics. For example, with longer wavelengths, beams can deliver significantly more energy due to the λ 2 scaling of the critical power for self-focusing [10], where λ is the wavelength.…”

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confidence: 99%

Wavelength-scaled laser filamentation in solids and plasma-assisted subcycle light-bullet generation in the long-wavelength infrared

2018

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We theoretically investigate mid-and long-wavelength infrared laser filamentation in solids, revealing extreme self-steepening and optical shock, multi-octave spanning supercontinuum generation, and most importantly sub-cycle light bullet generation. Light bullet generation in solids at long wavelengths depends critically on plasma, which is in sharp contrast to that in air where the arrest of collapse for light bullet generation is dominated by radiation loss. Our method for sub-cycle light bullet generation in solids at long wavelengths can open new possibilities for extreme ultrafast nonlinear optics including high-order harmonic and attosecond pulse generation.

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confidence: 99%

Wavelength-scaled laser filamentation in solids and plasma-assisted subcycle light-bullet generation in the long-wavelength infrared

2018

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“…By using a long wavelength driver laser pulse, it becomes possible to generate shorter wavelength high harmonics due to the ponderomotive energy scaling with square of wavelength [4]. It may result in shorter attosecond pulse generation via high harmonic generation.…”

Section: Introductionmentioning

confidence: 99%

Generation of Phase-Stable Sub-Cycle Mid-Infrared Pulses from Filamentation in Nitrogen

Fuji

Nomura

2013

Applied Sciences

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Sub-single-cycle pulses in the mid-infrared (MIR) region were generated through a laser-induced filament. The fundamental (ω 1 ) and second harmonic (ω 2 ) output of a 30-fs Ti:sapphire amplifier were focused into nitrogen gas and produce phase-stable broadband MIR pulses (ω 0 ) by using a four-wave mixing process (ω 1 + ω 1 − ω 2 → ω 0 ) through filamentation. The spectrum spread from 400 cm −1 to 5500 cm −1 , which completely covered the MIR region. The low frequency components were detected by using an electro-optic sampling technique with a gaseous medium. The efficiency of the MIR pulse generation was very sensitive to the delay between the fundamental and second harmonic pulses. It was revealed that the delay dependence of the efficiency came from the interference between two opposite parametric processes, ω 1 + ω 1 − ω 2 → ω 0 and ω 2 − ω 1 − ω 1 → ω 0 . The pulse duration was measured as 6.9 fs with cross-correlation frequency-resolved optical gating by using four-wave mixing in nitrogen. The carrier-envelope phase of the MIR pulse was passively stabilized. The instability was estimated as 154 mrad rms in 2.5 h.

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“…The development of methods devoted to the generation of broadband ultrashort pulses in the near-and mid-IR frequency ranges has recently seen considerable growth. One of the strongest motivations has been the prospect of increasing the cutoff frequency of x-ray pulses generated via highharmonic generation [1][2][3]. Nonlinear wave-mixing methods, such as optical parametric amplification (OPA), difference frequency generation, and four-wave mixing, have proven very versatile for the generation of broadband laser radiation tunable over a wide frequency range from the visible to terahertz waves [4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Ultrabroadband few-cycle infrared pulse generation from a noncollinear optical parametric amplifier based on bulk niobate crystals

Isaienko

Borguet

2013

J. Opt. Soc. Am. B

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We describe a near-IR two-stage noncollinear optical parametric amplifier (NOPA) pumped at 800 nm that employs bulk congruent lithium niobate [LiNbO 3 (c-LNB)] and bulk potassium niobate [KNbO 3 (KNB)] crystals. Noncollinear phase matching in these materials allows for generation of pulses as broad as 2900 cm −1 (∼78 THz) centered in the near-IR at ∼1300 nm. In the particular geometry described here, the LNB crystal amplifies the white-light seed continuum, and the KNB crystal further amplifies the broadband near-IR pulses. Use of pulse-front matching at both nonlinear optical crystals allows for improvement of the spatiotemporal profile of the amplified ultrabroadband signal pulses and their compression to ≤22 fs. Because of the relatively high nonlinear coefficients of these crystals, we achieve overall amplification efficiencies >7% in two consecutive NOPA stages.

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Scaling of High-Order Harmonic Generation in the Long Wavelength Limit of a Strong Laser Field

Cited by 12 publications

References 59 publications

Wavelength-scaled laser filamentation in solids and plasma-assisted subcycle light-bullet generation in the long-wavelength infrared

Wavelength-scaled laser filamentation in solids and plasma-assisted subcycle light-bullet generation in the long-wavelength infrared

Generation of Phase-Stable Sub-Cycle Mid-Infrared Pulses from Filamentation in Nitrogen

Ultrabroadband few-cycle infrared pulse generation from a noncollinear optical parametric amplifier based on bulk niobate crystals

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