Article
Physics, Applied
Wen Xiao, Minghao Zhang, Rui Zhang, Cunlin Zhang, Liangliang Zhang
Summary: A highly efficient terahertz (THz) coherent detection method using ethanol has been developed, overcoming the limitations of other schemes. Ethanol exhibits higher detection sensitivity than water, and the detection mode can be flexibly switched. The enhanced sensitivity is due to the properties of ethanol. This work improves the sensitivity of liquid-based coherent detection and provides insight into solute-solvent molecular interactions.
APPLIED PHYSICS LETTERS
(2023)
Review
Nanoscience & Nanotechnology
Zhenzhe Ma, Peiyan Li, Sai Chen, Xiaojun Wu
Summary: Extremely nonlinear terahertz (THz)-matter interactions and applications have become the next frontier in quantum information, nonlinear optics, and particle acceleration. However, the lack of highly intense THz sources and the diffraction limit hinder the growth of extreme THz. To address this issue, researchers are developing highly concentrated THz sources and utilizing resonant artificial structures to enhance local fields.
Article
Physics, Multidisciplinary
Ahmed Ghalgaoui, Benjamin P. Fingerhut, Klaus Reimann, Thomas Elsaesser, Michael Woerner
Summary: The terahertz response of solvated electrons in liquid water was studied through nonlinear ultrafast pump-probe experiments. Free electrons were generated by high-field THz or near-infrared multiphoton excitation, with concentrations ranging from c(e) = 4 to 140 x 10(-6) moles/liter. The time-resolved change of the dielectric function shows pronounced oscillations persisting up to 30 ps, with frequencies increasing with electron concentration and being set by the local electric field.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Donghwan Kim, Eric J. Heller
Summary: A potential for propagation of a wave in two dimensions is created by randomly superposing plane waves, resulting in a sharp Bragg diffraction pattern similar to powder diffraction. Contrary to expectations, the lack of periodic structure does not prevent the observation of this phenomenon. The scattering in a chaotic cavity is partially resonant and does not follow Fermi's golden rule.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Yu Xia, Min Li, Aifeng Wang, Xiaodan Tang, Mingyang He, Haihui Lv, Ling Zhang, Shuai Yuan, Xiaoyuan Zhou, Heping Zeng
Summary: The study investigates efficient terahertz emission from layered transition-metal pentatelluride ZrTe5 excited by femtosecond laser pulse, studying the physical mechanism and proving the absolute predominance of diffusion current, while achieving modulation of terahertz polarization. The findings indicate that ZrTe5 can generate strong and polarization controllable terahertz emission, crucial for investigating vibration modes of chiral biological molecules.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Sergey Bodrov, Aleksey Murzanev, Aleksey Korytin, Andrey Stepanov
Summary: The study introduces a novel graphene-based terahertz-field-induced optical luminescence (GB-TFIOL) technique for near-field mapping, demonstrating its application in visualizing local terahertz-field enhancement through experimental proof-of-principle.
Article
Optics
Jie Zhao, Yan-Ting Hu, Hao Zhang, Yu Lu, Li-Xiang Hu, Fu-Qiu Shao, Tong-Pu Yu
Summary: Laser-plasma accelerators (LPAs) are considered as an alternative to traditional accelerators due to their compact size, high acceleration gradients, and low cost. However, there are still challenges for LPAs in accelerating positrons, such as beam divergence control, energy spread, and plasma backgrounds. In this study, a multistage positron acceleration scheme driven by coherent THz radiation is proposed for high energy positron beam acceleration and propagation. Particle-in-cell simulations show that each acceleration stage can provide nearly 200 MeV energy gain for positrons, while controlling energy spread within 2% and maintaining beam emittance. This research may pave the way for potential experiments using large laser facilities and traditional accelerators combined with laser systems.
Article
Optics
Oliver Gueckstock, Lukas Nadvornik, Tom S. Seifert, Martin Borchert, Gerhard Jakob, Georg Schmidt, Georg Woltersdorf, Mathias Klaeui, Martin Wolf, Tobias Kampfrath
Summary: In this study, reliable modulation of terahertz electromagnetic waveforms was achieved by rapidly modulating the direction of the electric field of linearly polarized terahertz electromagnetic pulses using time-dependent magnetic fields. The approach demonstrated high contrast polarity modulation at 10 kHz rates and the ability to modulate the terahertz field direction between specific angles at kilohertz rates, making spintronic terahertz emitters a promising source for various applications.
Article
Optics
Georgy E. Rizaev, Leonid Seleznev, Daria Mokrousova, Dmitrii Pushkarev, Andrey A. Ionin
Summary: We investigate the angular distribution of different spectral components of terahertz emission from a single-color laser filament plasma. The experimental results show that the opening angle of a terahertz cone is proportional to the inverse square root of both the plasma channel length and terahertz frequency in the non-linear focusing mode, but this relationship breaks down in the case of linear focusing. We also demonstrate experimentally that any conclusions about the spectral composition of terahertz radiation need to specify the angle range from which it is collected.
Article
Chemistry, Physical
Tao E. Li, Abraham Nitzan, Sharon Hammes-Schiffer, Joseph E. Subotnik
Summary: This study presents a quantum simulation of vibrational strong coupling in the collective regime using thermostated ring-polymer molecular dynamics. The simulation shows that including nuclear and photonic quantum effects does not change the Rabi splitting but broadens polaritonic line widths. Additionally, both quantum and classical simulations predict that the static dielectric constant of liquid water remains largely unchanged inside vs outside the cavity under thermal equilibrium. However, this disagrees with a recent experiment, suggesting potential limitations of the approach or unexplored experimental factors.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Jiahua Cai, Sai Chen, Chunyan Geng, Jianghao Li, Baogang Quan, Xiaojun Wu
Summary: We investigate the nonlinear modulation dynamics of a THz-nano metasurface on silicon substrates using a time-resolved strong-field THz-pump THz-probe (TPTP) technique. The self-modulation phenomenon with a frequency shift of about 50 GHz is achieved by switching the THz field strength. This phenomenon is attributed to the impact ionization (IMI) of the silicon substrate under the excitation of strong THz fields in nano-gaps.
Article
Optics
Taegyu Pak, Mohammad Rezaei-Pandari, Sang Beom Kim, Geonwoo Lee, Dae Hee Wi, Calin Ioan Hojbota, Mohammad Mirzaie, Hyeongmun Kim, Jae Hee Sung, Seong Ku Lee, Chul Kang, Ki-Yong Kim
Summary: High-power terahertz radiation was emitted from a gas jet irradiated by 100-terawatt-class laser pulses. The emitted radiation was characterized in terms of its spectrum, polarization, and energy dependence on the accompanying electron bunch energy and charge under various gas target conditions. The generation mechanism of high-energy terahertz radiation in laser-wakefield acceleration was examined through analytic calculations and particle-in-cell simulations.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Review
Chemistry, Analytical
Minghao Zhang, Wen Xiao, Cunlin Zhang, Liangliang Zhang
Summary: This paper summarizes recent research on TKE spectroscopy, focusing on the principle and application of TKE technology in studying solid matter. The low-frequency molecular dynamics of liquid water and aqueous solutions are also explored using TKE. The evaluation of hydrogen bond-related kinetic properties of liquid water is of great importance.
Article
Multidisciplinary Sciences
Erling Hu, Qi Zhang, Sen Shang, Yinan Jiang, Xiaoyun Lu
Summary: The research revealed that 0.1THz radiation can promote cellular endocytosis and transmembrane transport of small molecules, influencing cell membrane permeability. This provides direct evidence for the potential application of THz in regulating cell membrane functions.
Article
Multidisciplinary Sciences
Jun-ichi Sugiyama, Yuji Tokunaga, Mafumi Hishida, Masahito Tanaka, Koh Takeuchi, Daisuke Satoh, Masahiko Imashimizu
Summary: This study investigates the collective dynamics of protein and water molecules in the sub-terahertz frequency region and their influence on the chemical processes in protein-water systems. The results show that sub-terahertz irradiation gradually decreases the dielectric permittivity of the protein solution by reducing the polarization of water molecules. These findings are important for studying hydration-mediated protein functions based on sub-terahertz irradiation.
NATURE COMMUNICATIONS
(2023)
Review
Optics
E. Yiwen, Liangliang Zhang, Anton Tsypkin, Sergey Kozlov, Cunlin Zhang, X-C Zhang
Summary: This paper reviews the recent progress, challenges, and opportunities of THz emission from liquids. The fluidity of liquids allows each laser pulse to interact with a fresh area, which may offer new possibilities in the exploration of THz liquid photonics and play an important role in the study of laser-liquid interaction.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Danni Ma, Liquan Dong, Minghao Zhang, Rui Zhang, Yuejin Zhao, Cunlin Zhang, Liangliang Zhang
Summary: The intensity, polarization, and spectrum of terahertz (THz) waves can be controlled by changing parameters such as energy ratio, relative phase, and polarization direction. The center frequency of the THz spectrum can be blue shifted by shortening the optical length of the modulation beam. Arbitrary elliptically polarized THz waves can be obtained by controlling the relative polarization angle of the two-color modulation lasers.
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
(2022)
Article
Optics
Chenglong Zheng, Jie Li, Zhen Yue, Jitao Li, Jingyu Liu, Guocui Wang, Silei Wang, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: An all-silicon multifunctional metasurface platform is proposed in this study, which allows independent control of the amplitude, phase, and polarization of electromagnetic waves and integration of multiple functions on a single device. The platform demonstrates the ability to encode three pairs of amplitude and phase profiles into a single-layer device by switching the polarization states of incident and transmitted waves. It has potential applications in particle manipulation, biology, imaging, and other fields.
LASER & PHOTONICS REVIEWS
(2022)
Article
Materials Science, Multidisciplinary
Zhen Yue, Jitao Li, Jingyu Liu, Jie Li, Chenglong Zheng, Guocui Wang, Hang Xu, Mingyang Chen, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: The study demonstrates the capability of fully phase-modulated metasurfaces to independently control the wavefront of cross- and co-polarized output components under circularly polarized incidence. It introduces complex amplitude modulation as a new degree of freedom, allowing for further modulation of the intensity and phase. This research opens up new possibilities for the design of multi-functional polarization manipulation metasurfaces.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Xin-ke Wang, Jia-sheng Ye, Wen-feng Sun, Peng Han, Lei Hou, Yan Zhang
Summary: A technique based on air-plasma dynamic aperture was developed to achieve THz imaging with quasi sub-wavelength resolution, without the need to approach the sample with any devices and avoiding damage to the sample. This technique has the potential to accelerate the advancement of THz microscopy by enabling near-field imaging of different materials.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Jitao Li, Zhen Yue, Jie Li, Chenglong Zheng, Jingyu Liu, Fan Yang, Hui Li, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: In this work, wavefront-controllable terahertz (THz) meta-polarizers based on all-silicon materials are reported, which have higher integration characteristics than conventional metapolarizers and wavefront-controllable PCMs. These meta-polarizers can generate polarized waves from unpolarized waves and manipulate the wavefront simultaneously, providing a new impact for THz wave manipulations.
SCIENCE CHINA-MATERIALS
(2023)
Article
Optics
Guocui Wang, Tian Zhou, Jianzhou Huang, Xinke Wang, Bin Hu, Yan Zhang
Summary: This paper designs an all-dielectric moire meta-device that integrates the functions of an axicon and a spiral phase plate to generate terahertz Bessel beams. The order and nondiffraction length of the Bessel beam can be continuously tuned, and the feasibility of the platform is experimentally demonstrated. The moire meta-device provides a powerful strategy for dynamically manipulating the wavefront of electromagnetic waves and controlling the properties of the Bessel beam.
PHOTONICS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Zhen Yue, Jitao Li, Jie Li, Chenglong Zheng, Jingyu Liu, Die Zou, Hang Xu, Fan Yang, Hui Li, Liang Wu, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: A versatile all-dielectric metasurface platform capable of dual-functional polarization manipulation for the orthogonal states of polarization in the terahertz frequency range is proposed. The platform exhibits the properties of a full-waveplate and a quarter-waveplate for different circularly polarized light. Experimental demonstrations through the design, fabrication, and characterization of representative metasurfaces validate the capability of dual-functional polarization manipulation.
Article
Chemistry, Multidisciplinary
Guibin Li, Guocui Wang, Yan Zhang, Jingling Shen, Bo Zhang
Summary: The combination of graphene and perovskite has attracted a lot of attention due to its excellent photoelectric properties for manipulating light-matter interactions. The integration of graphene and perovskite with a metasurface is proposed to enhance the metasurface device's performance. In this study, a tunable terahertz graphene-perovskite metasurface is demonstrated, showing significant reduction in transmission and manipulation of the Fano resonance mode under 780 nm laser excitation. Experimental results are verified using finite-difference time-domain simulation.
NANOSCALE ADVANCES
(2023)
Article
Computer Science, Information Systems
Jitao Li, Zhen Yue, Jie Li, Chenglong Zheng, Silei Wang, Mengyao Li, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: This paper designs spatially interleaved terahertz metasurfaces based on the ingenious spatial interleaving principles and demonstrates diverse wavefront manipulations in the terahertz range. The functions performed include OAM superposition of single-frequency vortex beams, separate vortex focusing of single-frequency dual beams, different OAM manipulations of bifrequency beams in different planes, and achromatic focusing. These functions prove that spatially interleaved metasurfaces can manipulate terahertz wavefronts at both single frequency and bifrequency, which traditional metasurfaces cannot. This work paves the way for diverse terahertz wavefront manipulations.
SCIENCE CHINA-INFORMATION SCIENCES
(2023)
Article
Physics, Multidisciplinary
Zhen Yue, Jitao Li, Jie Li, Chenglong Zheng, Binbin Lu, Jingyu Liu, Fan Yang, Hui Li, Yan Zhang, Yating Zhang, Xiaofei Zang, Jianquan Yao
Summary: This work proposes a transmission-mode, multichannel all-silicon metasurface platform that can independently implement functionalities in two orthogonally polarized output fields under linearly polarized incidences, promoting design flexibility. By designing, fabricating, and characterizing a monolayer metasurface composed of silicon pillars, the ability of multi-dimensional light field control, such as polarization-switchable focusing beam, is demonstrated. Additionally, the designed metasurface can generate polarization-switchable Bessel vortex beams under linearly polarized incidences, verifying the flexibility and practicality of the platform.
ANNALEN DER PHYSIK
(2023)
Article
Physics, Multidisciplinary
Xing-Long Zhu, Wei-Yuan Liu, Min Chen, Su-Ming Weng, Dong Wu, Tong-Pu Yu, Wei-Min Wang, Zheng-Ming Sheng, Jie Zhang
Summary: In this study, a new approach to access the strong-field QED regime in the laboratory is presented, which involves self-pinching an electron beam to near-solid-density by passing it through a properly designed hollow cone target. This beam-focusing scheme can significantly reduce the beam diameter and increase its density, leading to the production of ultradense electron beams. These ultradense electron beams can unlock a new regime of QED-dominated beam-plasma interactions.
NEW JOURNAL OF PHYSICS
(2023)
Article
Optics
Chenglong Zheng, Jingyu Liu, Hui Li, Mengguang Wang, Huaping Zang, Yan Zhang, Jianquan Yao
Summary: This article demonstrates a terahertz polarization detection scheme by performing mode purity analysis and multidimensional analysis of the transmitted vortex field. The power of the proposed scheme is verified by detecting various polarization trajectories and characterizing the detected polarization states using reconstructed polarization parameters. The experimental results validate the feasibility of this scheme in polarization detection.
PHOTONICS RESEARCH
(2023)
Article
Optics
Huan Zhao, Xinke Wang, Shutian Liu, Yan Zhang
Summary: This paper proposes a three-layer metallic THz metasurface for multi-channel polarization generation and phase modulation. It demonstrates a vectorial beam generator and a vectorial hologram with eight channels for different linear polarization states. This work contributes to achieving a multi-functional metasurface in the THz band and can benefit THz communication and optical information security.
OPTO-ELECTRONIC ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Guocui Wang, Bin Hu, Huan Zhao, Meng Xu, Xinyue Wang, Jiasheng Ye, Wenfeng Sun, Shengfei Feng, Peng Han, Xinke Wang, Bo Zhang, Yan Zhang
Summary: An innovative spatiotemporally tunable metasurface, combining a metasurface and two-dimensional perovskite materials, is proposed for multidimensional dynamic manipulation of the THz field. Experimental results demonstrate the multistage modulation capability and provide a new pathway for realizing more multifunctional dynamic meta-devices.
ADVANCED OPTICAL MATERIALS
(2023)
