Results 1 to 10 of about 1,986,833 (274)
Bessel Terahertz Pulses from Superluminal Laser Plasma Filaments
Ultrafast Science, 2022 Terahertz radiation with a Bessel beam profile is demonstrated experimentally from a two-color laser filament in air, which is induced by tailored femtosecond laser pulses with an axicon.
Zhelin Zhang +8 more
doaj +2 more sources
Sub-terahertz and terahertz generation in long-wavelength quantum cascade lasers [PDF]
Nanophotonics, 2019 Terahertz quantum cascade laser sources with intra-cavity non-linear frequency mixing are the first room-temperature electrically pumped monolithic semiconductor sources that operate in the 1.2–5.9 THz spectral range.
Fujita Kazuue +4 more
doaj +2 more sources
Imaging with a Terahertz quantum cascade laser
Optics Express, 2004 We demonstrate bio-medical imaging using a Terahertz quantum cascade laser. This new optoelectronic source of coherent Terahertz radiation allows building a compact imaging system with a large dynamic range and high spatial resolution. We obtain images of a rat brain section at 3.4 THz.
J Darmo +2 more
exaly +3 more sources
Focusing of inhomogeneous polarized modes of a laser waveguide dielectric resonator [PDF]
Радиофизика и электроника, 2020 Subject and Purpose. In this paper, spatial power characteristics of laser beams with inhomogeneous spatial polarization are theoretically investigated depending on whether they have moderate or sharp focusing.
A.V. Degtyarev +3 more
doaj +1 more source
iScience, 2022 Summary: The terahertz radiation from ultraintense laser-produced plasmas has aroused increasing attention recently as a promising approach toward strong terahertz sources.
Hong-Yi Lei +8 more
doaj +1 more source
Investigation of Laser-Induced Periodic Surface Structures Using Synthetic Optical Holography
Nanomaterials, 2022 In this paper, the investigation of laser-induced periodic surface structures (LIPSSs) on a polycrystalline diamond substrate using synthetic optical holography (SOH) is demonstrated.
Krisztian Neutsch +3 more
doaj +1 more source
Collimated terahertz radiation through a laser irradiating on a T-type target
Frontiers in Physics, 2022 A scheme, applying a linearly polarized laser irradiating on a T-type target which contains a longitudinal target followed by a transverse target, is proposed to collimate the terahertz radiation.
Chong Lv +4 more
doaj +1 more source
Terahertz Emission Enhanced by a Laser Irradiating on a T-Type Target
Applied Sciences, 2022 The generation of high field terahertz emission based on the interaction between an ultra-intense laser and solid targets has been widely studied in recent years because of its wide potential applications in biological imaging and material science. Here,
Ji Zhang, Xiaona Ban, Feng Wan, Chong Lv
doaj +1 more source
Terahertz spectroscopy of semiconductor microcavity lasers: Photon lasers [PDF]
Physical Review B, 2021 Semiconductor microcavities can exhibit various macroscopic quantum phenomena, including Bose-Einstein condensation of polaritons, Bardeen-Cooper-Schrieffer (BCS) states of polaritons, and photon lasing (lasing with negligible Coulombic exciton effects).
M. Spotnitz, N. H. Kwong, R. Binder
openaire +2 more sources
Millimeter Wave Photonics with Terahertz Semiconductor Lasers [PDF]
2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2021 AbstractMillimeter wave (mmWave) generation using photonic techniques has so far been limited to the use of near-infrared lasers that are down-converted to the mmWave region. However, such methodologies do not currently benefit from a monolithic architecture and suffer from the quantum defect i.e.
Pistore, Valentino +12 more
openaire +8 more sources