Spectral Narrowing Effect of a Novel Super-Grating Dual-Gate Structure for Plasmon-Resonant Terahertz Emitter

Nishimura, Takuya; Magome, Nobuhiro; Kang, HyunChul; Otsuji, T.

doi:10.1587/transele.e92.c.696

Cited by 11 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One is the incoherent plasmon modes which are thermally excited by the hot electrons, concealing the resonant spectral narrowing effect [45]. The other is the V DS -dependent dispersion of the 2D electron densities along with the channel, causing dispersion in plasmon resonant frequencies along the channel [47]. A super-grating (SGG) structure, in which the grating finger size varies so as to compensate for the n s dispersion, will work for obtaining a shows the emission intensity at the peak intensity frequency of~2.7 THz for different V g1 /V g2 conditions.…”

Section: Thz Emission Performancementioning

confidence: 99%

Emission of Terahertz Radiation from Two-Dimensional Electron Systems in Semiconductor Nano- and Hetero-Structures

Otsuji

Watanabe

Moutaouakil

et al. 2010

J Infrared Milli Terahz Waves

Self Cite

View full text Add to dashboard Cite

This paper reviews recent advances in emission of terahertz radiation from two-dimensional (2D) electron systems in semiconductor nano-heterostructures. 2D plasmon resonance is first presented to demonstrate intense broadband terahertz emission from InGaP/InGaAs/GaAs and InAlAs/InGaAs/InP material systems. The device structure is based on a high-electron mobility transistor and incorporates the author's original interdigitated dual-grating gates. Second topic focuses on graphene, a monolayer carbon-atomic honeycomb lattice crystal, exhibiting unique carrier transport and optical properties owing to massless and gapless energy spectrum. Coherent stimulated terahertz emission from femtosecond infrared-laser pumped epitaxial graphene is experimentally observed, reflecting the occurrence of negative dynamic conductivity and population inversio

show abstract

Section: Thz Emission Performancementioning

confidence: 99%