Analysis of a narrowband terahertz signal generated by a unitravelling carrier photodiode coupled with a dual-mode semiconductor Fabry–Pérot laser [PDF]
, 2010 A narrowband terahertz signal generated by a unitravelling carrier photodiode (UTC-PD) interfaced with a dual-mode Fabry–Pérot laser diode is demonstrated.
Akalin, Tahsin +8 more
core +2 more sources
Control of transverse mode content and polarization structure of terahertz coherent beams [PDF]
Компьютерная оптика, 2019 The paper is devoted to investigation of forming multimode coherent beams of terahertz radiation with pre-given transverse mode content and terahertz vector beams by use of silicon diffractive optical elements forming single modes from terahertz free ...
Vladimir Pavelyev +4 more
doaj +1 more source
Electrical and radiation characteristics of semilarge photoconductive terahertz emitters [PDF]
, 2004 We present experimental characterization of semilarge photoconductive emitters, including their electrical/photoconductive parameters and terahertz spectra. A range of emitters were studied and fabricated on both LT-GaAs and SI-GaAs, having a variety
Fletcher, J.R. +4 more
core +1 more source
APL Photonics, 2023 Terahertz quantum cascade laser sources based on intra-cavity Cherenkov difference-frequency generation in dual-wavelength mid-infrared quantum cascade lasers are currently the only monolithic semiconductor laser technology that can deliver continuous ...
Wolfhard Oberhausen +7 more
doaj +1 more source
Investigation on the origin of terahertz waves generated by dc-biased multimode semiconductor lasers at room temperature [PDF]
, 2008 A technique to measure a terahertz wave generated by spectrum tailored Fabry–Pérot lasers (FP) is assessed. A dc-biased and 25 °C temperature controlled FP is probed by a continuous wave signal, tuned at 20 nm away from its lasing modes.
D’Ottavi A. +4 more
core +1 more source
Results in Optics, 2023 The present study proposes a methodology for improving terahertz (THz) radiation through the utilisation of a laser directed towards a graphene strip that has been coated onto a GaAs structure.
Sandeep, Hitendra K. Malik
doaj +1 more source
Terahertz wave generation from a dc-biased multimode laser [PDF]
, 2008 We present results achieved in the generation of terahertz wave by a semiconductor laser. It is a Fabry–Pérot based device with shallow grooves implemented on its p-side to engineer the longitudinal mode spectrum.
Landais, Pascal +2 more
core +1 more source
Spatial-energy characteristics of focused modes of a metal terahertz laser resonator [PDF]
Радиофизика и электроника, 2019 Subject and ppurpose. In this paper, the spatial-energy characteristics of laser beams with inhomogeneous spatial polarization with their moderate and sharp focusing are theoretically investigated.
S.A. Vlasenko +3 more
doaj +1 more source
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
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
doaj +1 more source