Results 31 to 40 of about 36,720 (261)
Sub-terahertz and terahertz generation in long-wavelength quantum cascade lasers
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
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Optical characteristics of the undamaged and laser damaged K9 glass in terahertz band
Materials Research Express, 2020 K9 glass is an important optical element of the high energy laser system. In an attempt to investigate the variation of optical properties of K9 glass before and after laser induced damage, based on the transmission terahertz time-domain spectral system,
Xiaoyan Shang +4 more
doaj +1 more source
Terahertz wave amplification by a laser-modulated relativistic electron beam
Physical Review Accelerators and Beams, 2021 Generation of tunable terahertz radiation based on the interaction of a frequency-chirped low power terahertz wave with a relativistic electron beam is proposed.
Hossein Saberi +2 more
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Dynamic modeling of Terahertz Quantum cascade lasers [PDF]
, 2011 In this paper, the influence of the simplifications made in the four-equation-based set of rate equations describing the dynamic behavior of a Quantum Cascade Laser (QCL) is studied.
Destic, Fabien +3 more
core +1 more source
Terahertz Switch Utilizing Inorganic Perovskite-Embedded Metasurface
Frontiers in Physics, 2020 Various applications of terahertz technology require a large number of various terahertz wave control devices. Yet, high efficient and rapid-response terahertz switch is still a great challenge.
Ri-Hui Xiong +2 more
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Wide frequency tuning of continuous terahertz wave generated by difference frequency mixing under exciton-excitation conditions in a GaAs/AlAs multiple quantum well [PDF]
, 2018 Continuous terahertz wave sources with narrow bandwidth and wide frequency tunability enable high-resolution terahertz spectroscopy and high-speed information communication.
Clarke, Edmund +7 more
core +3 more sources
Broadband Terahertz Detection by Laser Plasma with Balanced Optical Bias
Sensors, 2022 Using a controlled optical bias and balanced geometry, we propose a new scheme for broadband terahertz detection by laser-gas interaction without high-voltage manipulation. Compared to the conventional optical bias scheme, the common noise is reduced and
Xu Sun +8 more
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Active photonic crystal terahertz laser
Optics Express, 2009 We present the design and the realization of active photonic crystal (PhC) semiconductor lasers. The PhC consists of semiconductor nanostructure pillars which provide gain at a quantized transition energy. The vertical layer sequence is that of a terahertz quantum cascade laser.
A, Benz +7 more
openaire +2 more sources
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
IEEE Photonics Journal, 2018 Terahertz high-data communication creates numerous demands for terahertz wave amplitude modulation. Here, we experimentally demonstrate a high-speed terahertz wave modulator based on 4-N,N-dimethylamino-4'-N'-methyl-stilbazolium tosylate (DAST)/Si
Li Jiu-sheng, Li Shao-he, Zhang Le
doaj +1 more source