Experimental measurement of the wake field in a plasma filament created by a single-color ultrafast laser pulse

Generation of High-Power Terahertz Waves in a Collisional and Magnetized Plasma by Two-Color Femtosecond Laser Beams

“…This affects the width of the angular patterns observed in the fields of forward and wake radiation emission. The experimental findings by Yan Peng et al confirm the observed results related to the normalized fields of the wake in induced plasma by a single-color ultrafast laser pulse [24]. The findings of present study also agree with the results of Danni Ma et al on the normalized THz waves electric field initiated by two-color laser pulse [25].…”

“…The investigation of THz wave radiation has emerged as a fascinating field of study, with profound implications across diverse scientific and technological domains. Hence, understanding the underlying mechanisms and optimizing the THz waves generation is crucial for harnessing their full potential [4,5]. However, a persistent challenge within this domain pertains to the attainment of narrowband THz sources capable of delivering pulse energies surpassing the threshold of ‫ܬߤ1‬ [6][7][8][9].…”

“…These simulations demonstrated the production of coherent THz radiation with energy levels ranging from ‫ܬߤ‬ to ‫ܬ݉‬ . Yan Peng and colleagues considered the experimental measurement of wakefields in a plasma filament induced by a laser pulse [15]. They introduced a stable method for precise measurement of wakefield amplitude, which influences the intensity and bandwidth of the emitted THz wave.…”

Theoretical Investigation on the Mechanism and Law of Broadband Terahertz Wave Detection Using Rydberg Quantum State

“…In the past forty years, terahertz radiation sources and detectors has made great development. Combing with the coherent detection, more and more detection technologies such as photoconductive antennas [7], electrooptical crystals [8], and air detection [9], [10] have gradually matured. The phase information of the electric field is obtained on the basis of the original detection relative intensity, and the minimum detectable power is also getting smaller and smaller.…”

Transformation of the frequency-angular spectrum of THz emissions produced by a single-color laser filament under an external electrostatic field of various strength

“…In addition to this, in [11] the authors found that there is a threshold electric field, below which characteristics of the THz wave are determined by the ponderomotive force, and above-by the applied electric field. Some other recent studies [12,13] do also compare THz spectra after filamentation with and without an external field disregarding, however, a possible difference in angular distribution of various spectral components. In [14], an angular distribution of THz emission from two parallel filaments in an external field was measured for various spatial gaps and time delays between filaments, and different positions of electrodes.…”