Results 31 to 40 of about 36,061 (262)
Self-consistent scattering model of carrier dynamics in GaAs-AlGaAs terahertz quantum-cascade lasers [PDF]
, 2003 Intersubband electron scattering transport in terahertz GaAs–AlGaAs quantum cascade lasers is analyzed, using a full 13-level self-consistent rate equation model.
Harrison, P. +3 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 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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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
doaj +1 more source
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
Optimization of photomixers and antennas for continuous-wave terahertz emission [PDF]
, 2005 We have studied terahertz emission from interdigitated finger photomixers coupled to planar antenna structures. Using both pulsed and continuous-wave excitation, polarization measurements reveal that the antenna design dominates the properties of the
Baker, C. +7 more
core +1 more source
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
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Intense terahertz laser fields on a two-dimensional electron gas with Rashba spin-orbit coupling
, 2004 The spin-dependent density of states and the density of spin polarization of an InAs-based two-dimensional electron gas with the Rashba spin-orbit coupling under an intense terahertz laser field are investigated by utilizing the Floquet states to solve ...
J. L. Cheng, M. W. Wu, Xu J. Z.
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Coherent phonon induced optical modulation in semiconductors at terahertz frequencies [PDF]
, 2013 The coherent modulation of electronic and vibrational nonlinearities in atoms and molecular gases by intense few-cycle pulses has been used for high-harmonic generation in the soft X-ray and attosecond regime, as well as for Raman frequency combs that ...
Constantinescu Anca Monia +4 more
core +2 more sources