Generation and detection of pulsed terahertz waves in gas: from elongated plasmas to microplasmas

Buccheri, Fabrizio; Huang, Pingjie; Zhang, X.-C.

doi:10.1007/s12200-018-0819-8

Cited by 10 publications

(3 citation statements)

References 131 publications

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“…It is also well recognized that strong electromagnetic waves could be dangerous for health and electronics. Methods of detection of electromagnetic waves and mitigation of their undesirable effects are also in full development [3][4][5][6] .…”

Section: Introduction: Why the Electromagnetic Pulses Are So Importantmentioning

confidence: 99%

Laser produced electromagnetic pulses: generation, detection and mitigation

Consoli

Tikhonchuk

Bardon

et al. 2020

High Pow Laser Sci Eng

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This paper provides an up-to-date review of the problems related to the generation, detection and mitigation of strong electromagnetic pulses created in the interaction of high-power, high-energy laser pulses with different types of solid targets. It includes new experimental data obtained independently at several international laboratories. The mechanisms of electromagnetic field generation are analyzed and considered as a function of the intensity and the spectral range of emissions they produce. The major emphasis is put on the GHz frequency domain, which is the most damaging for electronics and may have important applications. The physics of electromagnetic emissions in other spectral domains, in particular THz and MHz, is also discussed. The theoretical models and numerical simulations are compared with the results of experimental measurements, with special attention to the methodology of measurements and complementary diagnostics. Understanding the underlying physical processes is the basis for developing techniques to mitigate the electromagnetic threat and to harness electromagnetic emissions, which may have promising applications.

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Section: Introduction: Why the Electromagnetic Pulses Are So Importantmentioning

confidence: 99%

Laser produced electromagnetic pulses: generation, detection and mitigation

Consoli

Tikhonchuk

Bardon

et al. 2020

High Pow Laser Sci Eng

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“…On the other hand, to satisfy the demand on wide band, high-intensity THz pulse generation, a large variety of techniques has been developed following the technological advancements in femtosecond laser systems. Some major sources to name are Schottky diode mixers [10,11], backward wave oscillators [12][13][14], quantum cascade lasers [15,16], nanosecond gas lasers [17] and gas plasmas assisted THz generation [18][19][20]. The main limitations of these laser driven THz sources stem from the emission intensities (<µJ) and/or the reduced frequency bandwidth (<10 THz) related to the intrinsic absorption characteristics of the nonlinear conversion media used.…”

Section: Conventional Terahertz Sourcesmentioning

confidence: 99%

Multi-Pass Free Electron Laser Assisted Spectral and Imaging Applications in the Terahertz/Far-IR Range Using the Future Superconducting Electron Source BriXSinO

et al. 2022

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Free-Electron Lasers are a rapidly growing field for advanced science and applications, and worldwide facilities for intense field generation, characterization and usage are becoming increasingly popular due to their peculiarities, including extremely bright, coherent, wide band tunable ultra-short pulses which are not achievable with other techniques up to now. In this review we give a thorough survey of the latest advances in the Free-Electron Laser-based field generation and detection methodologies and then present the main characteristics of a future THz/IR source, named TerRa@BriXSinO, based on a superconducting linear accelerator. The foreseen source is strongly monochromatic, with a bandwidth of 1% or smaller, highly coherent both transversally and longitudinally, with extreme versatility and high frequency tunability. After introducing the most recent and novel FEL-assisted scientific investigations, including fundamental explorations into complex systems and time-dependent interactions and material dynamics, we present our vision on the potential use of the TerRa facility and analyze some possible applications, ranging from non-linear physics under extreme conditions to polarization sensitive imaging and metamaterial-based sensing.

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“…This nonlinearity has low-inertia mechanism, which means that high-speed THz photonics devices based on nonlinear effects are promising. The analysis of already studied nonlinear effects in the field of pulsed THz radiation can be found in review papers [17][18][19] . In addition to the investigation of the features of nonlinear phenomena in the THz frequency range, the study of new nonlinear materials for this range is actively developing, as well as optimizing existing ones in order to increase the efficiency of nonlinear processes for various applications.…”

Section: Introductionmentioning

confidence: 99%

Radiation shift from triple to quadruple frequency caused by the interaction of terahertz pulses with a nonlinear Kerr medium

Artser

Melnik

Ismagilov

et al. 2022

Preprint

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High-intensity optical radiation propagation in a transparent dielectric medium causes the phenomena of self-action of the pulse and the generation of radiation at triple frequencies due to the cubic nonlinearity of the medium. However, usually the quadratic nonlinear effects outshine the cubic ones in the anisotropic nonlinear crystals. In this work, we demonstrate that for certain experimental parameters the nonlinear effect of the third order can be stronger than one of the second order in MgO:LiNbO3 crystal for terahertz frequency range. We experimentally and theoretically show that it can lead to the significant modification of the classical phenomenon of radiation generation at triple frequencies in the case when the pulse represents only one complete oscillation of the optical field. In the experiment it was shown that the phenomenon of generation of radiation at triple frequencies with respect to the frequency of the maximum spectral density in a nonlinear medium of the pulse disappears, and it is replaced by the generation of radiation at quadruple frequencies. The analysis demonstrates that this effect is based on the asymmetry of the initial spectrum of such extremely short pulses in terms of the number of oscillations.

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Generation and detection of pulsed terahertz waves in gas: from elongated plasmas to microplasmas

Cited by 10 publications

References 131 publications

Laser produced electromagnetic pulses: generation, detection and mitigation

Laser produced electromagnetic pulses: generation, detection and mitigation

Multi-Pass Free Electron Laser Assisted Spectral and Imaging Applications in the Terahertz/Far-IR Range Using the Future Superconducting Electron Source BriXSinO

Radiation shift from triple to quadruple frequency caused by the interaction of terahertz pulses with a nonlinear Kerr medium

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