Zobrazeno 1 - 10
of 339
pro vyhledávání: '"Roskos Hartmut G."'
Publikováno v:
Nanophotonics, Vol 13, Iss 14, Pp 2443-2451 (2024)
The investigation of strong coupling between light and matter is an important field of research. Its significance arises not only from the emergence of a plethora of intriguing chemical and physical phenomena, often novel and unexpected, but also fro
Externí odkaz:
https://doaj.org/article/25317a80a13c40deb865404a9809855f
This study proposes a novel approach utilizing a physics-informed deep learning (DL) algorithm to reconstruct occluded objects in a terahertz (THz) holographic system. Taking the angular spectrum theory as prior knowledge, we generate a dataset consi
Externí odkaz:
http://arxiv.org/abs/2408.13066
In the past decade, detection of THz radiation by plasma-wave-assisted frequency mixing in antenna-coupled field-effect transistors (TeraFETs) -- implemented in various semiconductor material systems (Si CMOS, GaN/AlGaN, GaAs/AlGaAs, graphene, etc.)
Externí odkaz:
http://arxiv.org/abs/2405.18764
Terahertz (THz) imaging is one of the hotspots in the field of optics, where the depth information retrieval is a key factor to restore the three-dimensional appearance of objects. Impressive results for depth extraction in visible and infrared wave
Externí odkaz:
http://arxiv.org/abs/2405.18317
Autor:
Krysl, Anastasiya, But, Dmytro B., Ikamas, Kęstutis, Holstein, Jakob, Shevchik-Shekera, Anna, Roskos, Hartmut G., Lisauskas, Alvydas
This paper presents a study on performance optimization and resonant frequency modification of terahertz detectors by the use of hyper-hemispherical silicon superstrate lenses. The detectors are patch-TeraFETs, i.e., field-effect transistors with mon
Externí odkaz:
http://arxiv.org/abs/2404.07715
Autor:
Meng, Fanqi, Tang, Zhenling, Ourednik, Petr, Hazarika, Jahnabi, Feiginov, Michael, Suzuki, Safumi, Roskos, Hartmut G.
Resonant tunneling diode (RTD) oscillators possess the highest oscillation frequency among all electronic THz emitters. However, the emitted power from RTDs remains limited. Here, we propose linear RTD-oscillator arrays capable of supporting coherent
Externí odkaz:
http://arxiv.org/abs/2404.07394
Autor:
Holstein, Jakob, North, Nicholas K., Horbury, Michael D., Kondawar, Sanchit, Kundu, Imon, Salih, Mohammed, Krysl, Anastasiya, Li, Lianhe, Linfield, Edmund H., Freeman, Joshua R., Valavanis, Alexander, Lisauskas, Alvydas, Roskos, Hartmut G.
Monolithically integrated, antenna-coupled field-effect transistors (TeraFETs) are rapid and sensitive detectors for the terahertz range (0.3-10~THz) that can operate at room temperature. We conducted experimental characterizations of a single patch-
Externí odkaz:
http://arxiv.org/abs/2404.07309
We report on the modeling and experimental characterization of Si CMOS detectors of terahertz radiation based on antenna-coupled field-effect transistors (TeraFETs). The detectors are manufactured using TSMC's 65-nm technology. We apply two models --
Externí odkaz:
http://arxiv.org/abs/2404.06790
Autor:
Walla Frederik, Wiecha Matthias M., Mecklenbeck Nicolas, Beldi Sabri, Keilmann Fritz, Thomson Mark D., Roskos Hartmut G.
Publikováno v:
Nanophotonics, Vol 7, Iss 1, Pp 269-276 (2018)
We investigated the excitation of surface plasmon polaritons on gold films with the metallized probe tip of a scattering-type scanning near-field optical microscope (s-SNOM). The emission of the polaritons from the tip, illuminated by near-infrared l
Externí odkaz:
https://doaj.org/article/00279216cb6c42f1beeee6577a9702f9
Autor:
Caridad, José M., Castelló, Óscar, Baptista, Sofía M. López, Taniguchi, Takashi, Watanabe, Kenji, Roskos, Hartmut G., Delgado-Notario, Juan A.
Publikováno v:
Nano Lett. 2024
Frequency-selective or even frequency-tunable Terahertz (THz) photodevices are critical components for many technological applications that require nanoscale manipulation, control and confinement of light. Within this context, gate-tunable phototrans
Externí odkaz:
http://arxiv.org/abs/2401.04005