Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Nima Nader-Esfahani"'
Autor:
Shiva Vangala, Joshua R. Hendrickson, Kevin D. Leedy, Junpeng Guo, David C. Look, Justin W. Cleary, Nima Nader Esfahani
Publikováno v:
SPIE Proceedings.
Extraordinary optical transmission (EOT), through highly conductive ZnO films with sub-wavelength hole arrays is investigated in the long-wavelength infrared regime. EOT is facilitated by the excitation of surface plasmon polaritons (SPPs) on Ga-Dope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a05524767e4ca1d485167883f689cae
https://doi.org/10.1117/12.2042477
https://doi.org/10.1117/12.2042477
Autor:
Joshua R. Hendrickson, Galina Khitrova, Sander Zandbergen, Patrick Keiffer, Martin Wegener, Michael Gehl, Nima Nader Esfahani, Muriel Béchu, Ricky Gibson, Jasmine Sears
Publikováno v:
Frontiers in Optics 2014.
Arrays of metallic antennae with wire, square and split-ring shapes are fabricated on a near-surface quantum well. The hybrid system is investigated using photoluminescence, transmission and transient pump-probe experiments.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85c844f54b85de1dde3748063d41eac4
https://doi.org/10.1364/ls.2014.lw1g.4
https://doi.org/10.1364/ls.2014.lw1g.4
Autor:
Nima Nader Esfahani, Don C. Abeysinghe, Joshua Myers, Joshua R. Hendrickson, Justin W. Cleary, Li-Chyong Chen, Dennis E. Walker, Shin Mou, Kuei-Hsien Chen
Publikováno v:
SPIE Proceedings.
We experimentally demonstrated graphene plasmon resonant absorption in mid-IR by utilizing an array of graphene nanoribbon resonators on SiO2 substrate. By tuning resonator width we probed the graphene plasmons with λ p ≤ λ0/100 and plasmon reson
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e214594823b49b79bec011fbe0b2d575
https://doi.org/10.1117/12.2045723
https://doi.org/10.1117/12.2045723
Autor:
Justin W. Cleary, Xin Qiao, Joshua R. Hendrickson, Robert E. Peale, Walter R. Buchwald, Nima Nader Esfahani
Publikováno v:
SPIE Proceedings.
THz electromagnetic waves resonantly excite plasmons in the two dimensional electron gas (2DEG) of high electron mobility transistors (HEMTs) via grating-gate couplers. These excitations can induce measureable photoresponse. Biasing the grating gate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04fce362f245cc063e0d856d92921bce
https://doi.org/10.1117/12.2037062
https://doi.org/10.1117/12.2037062
Autor:
David C. Look, Nima Nader Esfahani, Justin W. Cleary, Junpeng Guo, Shivashankar Vangala, Darren B. Thomson, Kevin D. Leedy, Joshua R. Hendrickson
Publikováno v:
SPIE Proceedings.
Extraordinary optical transmission (EOT) through highly conductive ZnO films with sub-wavelength hole arrays is investigated in the long-wavelength infrared regime. EOT is facilitated by the excitation of surface plasmon polaritons (SPPs) and can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dd31fcf0b61453565a376706f00848e
https://doi.org/10.1117/12.2022278
https://doi.org/10.1117/12.2022278
Autor:
Imen Rezadad, Janardan Nath, Deep Panjwani, Javaneh Boroumand, Evan M. Smith, Nima Nader-Esfahani, Robert E. Peale, Doug Maukonen
Publikováno v:
SPIE Proceedings.
Patterning of gold-black infrared absorbing films by stencil lithography and hardening by polymer infusion is reported. Gold black nano-structured films are deposited through a thin metal shadow mask in a thermal evaporator in ~400 mTorr pressure of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec4872d7590338aa01c078e7d3a06b3e
https://doi.org/10.1117/12.2018082
https://doi.org/10.1117/12.2018082
Autor:
Justin W. Cleary, Walter R. Buchwald, Joshua R. Hendrickson, Robert E. Peale, Nima Nader Esfahani
Publikováno v:
SPIE Proceedings.
Recent progress in the investigation of millimeter-wave and THz detectors based on plasmon excitation in the twodimensional electron gas (2DEG) of a high electron mobility transistor (HEMT) is reported. A tunable resonant polarized photoresponse to m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ea482c2bc7925b492b570e67ee95477
https://doi.org/10.1117/12.2006137
https://doi.org/10.1117/12.2006137
Autor:
Robert E. Peale, Joshua R. Hendrickson, Walter R. Buchwald, Justin W. Cleary, Nima Nader Esfahani
Publikováno v:
SPIE Proceedings.
A tunable resonant photoresponse to millimeter-waves is demonstrated in a grating-gated high electron mobility transistor (HEMT) formed by an InGaAs/InP heterostructure. The gate consists of a metal grating with 9 μm period, which was designed to co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c51affbb34929ca299233baba97a95e4
https://doi.org/10.1117/12.930359
https://doi.org/10.1117/12.930359
Autor:
Masa Ishigami, Walter R. Buchwald, Justin W. Cleary, Robert E. Peale, C. J. Fredricksen, Ben D. Dawson, Nima Nader Esfahani, Michael S. Lodge, Joshua R. Hendrickson
Publikováno v:
SPIE Proceedings.
Plasmon excitation in the two dimensional electron gas (2DEG) of grating-gated high electron mobility transistors (HEMTs) gives rise to terahertz absorption lines, which may be observed via transmission spectroscopy. Such absorption resonances may al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17d3a6e1a9dd512b7d4baa9e35d66116
https://doi.org/10.1117/12.918660
https://doi.org/10.1117/12.918660
Autor:
C. J. Fredricksen, Robert E. Peale, Walter R. Buchwald, Joshua R. Hendrickson, Justin W. Cleary, Masahiro Ishigami, Ben D. Dawson, Nima Nader Esfahani
Publikováno v:
SPIE Proceedings.
Tunable resonant absorption by plasmons in the two-dimensional electron gas (2DEG) of grating-gated InP- and Graphene-based HEMTs are investigated. Fourier-spectrometer-obtained transmission resonances are observed over a wide spectral band from mm w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c19c31560deafaa3741fab78db88af0d
https://doi.org/10.1117/12.907938
https://doi.org/10.1117/12.907938