Generation of single-cycle relativistic infrared pulses at wavelengths above 20 <i>µ</i>m from density-tailored plasmas

Zhu, Xing-Long; Liu, Weiyuan; Weng, Shangkun; Chen, Min; Sheng, Zheng-Ming; ZhangJie, Jie

doi:10.1063/5.0068265

Cited by 10 publications

(1 citation statement)

References 36 publications

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“…However, due to the damage threshold of the optical crystal, it is still challenging to generate mid-IR pulses with relativistic intensity, few cycles and controllable carrier wavelengths. In recent years, plasma-based optical modulation has received significant attention, and several effective schemes have been proposed to obtain high-intensity mid-IR pulses, such as the plasma optical modulator [25] , synchrotron radiation of refluxing electrons [26] , laser filamentation [27] and photon deceleration [28][29][30][31][32][33][34] . Among them, photon deceleration is the most feasible and experimentally validated method.…”

Section: Introductionmentioning

confidence: 99%

Laser chirp controlled relativistic few-cycle mid-infrared pulse generation

Li,

Zhang,

Zhao

et al. 2023

High Pow Laser Sci Eng

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Relativistic few-cycle mid-infrared (mid-IR) pulses are unique tools for strong-field physics and ultrafast science, but are difficult to generate with traditional nonlinear optical methods. Here, we propose a scheme to generate such pulses with high efficiency via plasma-based frequency modulation with a negatively chirped laser pulse (NCLP). The NCLP is rapidly compressed longitudinally due to dispersion and plasma etching, and its central frequency is downshifted via photon deceleration due to the enhanced laser intensity and plasma density modulations. Simulation results show that few-cycle mid-IR pulses with the maximum center wavelength of 7.9 µm and pulse intensity of a MIR = 2.9 can be generated under a proper chirp parameter. Further, the maximum energy conversion efficiency can approach 5.0%. Such a relativistic mid-IR source is promising for a wide range of applications.

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Section: Introductionmentioning

confidence: 99%

Laser chirp controlled relativistic few-cycle mid-infrared pulse generation

Li,

Zhang,

Zhao

et al. 2023

High Pow Laser Sci Eng

View full text Add to dashboard Cite

show abstract

Advances in laser-plasma interactions using intense vortex laser beams

Shi,

Zhang,

Arefiev

et al. 2024

Sci. China Phys. Mech. Astron.

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Injection induced by coaxial laser interference in laser wakefield accelerators

Wang

Zeng

et al. 2022

Matter and Radiation at Extremes

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We propose a new injection scheme that can generate electron beams with simultaneously a few permille energy spread, submillimeter milliradian emittance, and more than a 100 pC charge in laser wakefield accelerators. In this scheme, a relatively loosely focused laser pulse drives the plasma wakefield, and a tightly focused laser pulse with similar intensity triggers an interference ring pattern that creates onion-like multisheaths in the plasma wakefield. Owing to the change in wavefront curvature after the focal position of the tightly focused laser, the innermost sheath of the wakefield expands, which slows down the effective phase velocity of the wakefield and triggers injection of plasma electrons. Both quasicylindrical and fully three-dimensional particle-in-cell simulations confirm the generation of beams with the above mentioned properties.

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Generation of single-cycle relativistic infrared pulses at wavelengths above 20 µm from density-tailored plasmas

Abstract: Note: This paper is a part of the Special Topic Collection on Plasma Optics.

Cited by 10 publications

References 36 publications

Laser chirp controlled relativistic few-cycle mid-infrared pulse generation

Laser chirp controlled relativistic few-cycle mid-infrared pulse generation

Advances in laser-plasma interactions using intense vortex laser beams

Injection induced by coaxial laser interference in laser wakefield accelerators

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