Results 71 to 80 of about 36,061 (262)

Population-inversion and gain estimates for a semiconductor TASER [PDF]

, 2001
We have investigated a solid-state design advanced (see Soref et al, in SPIE Proceedings, vol. 3795, p, 516, 1999) to achieve a terahertz-amplification-by-the-stimulated-emision-of-radiation (TASER), The original design was based on light-to heavy-hole ...
Harrison, P., Soref, R.A.
core   +1 more source

Terahertz switch based on waveguide structures [PDF]

AIP Advances
We propose a terahertz switch based on nonlinear materials, which consists of a straight-through waveguide and two micro-ring waveguides with a concentric circle structure.
Feng-lei Guo, Jiu-sheng Li, Yu-xin Zhai
doaj   +1 more source

High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

Advanced Materials, EarlyView.
A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza, Karol Strutyński, Shuai Fu, Yifan Chen, Natalia M. Padial, Isabel del Barrio Gómez, Carlos Martí‐Gastaldo, Andrei N. Khlobystov, Mischa Bonn, Hai I. Wang, Manuel Melle‐Franco, Aurelio Mateo‐Alonso   +11 more
wiley   +1 more source

Dual terahertz comb spectroscopy with a single free-running fibre laser [PDF]

, 2018
Dual THz comb spectroscopy has the potential to be used as universal THz spectroscopy with high spectral resolution, high spectral accuracy, and broad spectral coverage; however, the requirement for dual stabilized femtosecond lasers hampers its ...
Hu, Guoqing, Li, Ting, Minamikawa, Takeo, Mizuguchi, Tatsuya, Nitta, Kazuki, Oe, Ryo, Yasui, Takeshi, Zhao, Xin, Zheng, Zheng   +8 more
core   +2 more sources

Potential of Sub-THz-Wave Generation in Li₂B₄O₇ Nonlinear Crystal at Room and Cryogenic Temperatures

Crystals, 2021
Due to their high optical damage threshold, borate crystals can be used for the efficient nonlinear down-conversion of terawatt laser radiation into the terahertz (THz) frequency range of the electromagnetic spectrum.
Dmitry Ezhov, Snezhana Turgeneva, Nazar Nikolaev, Alexander Mamrashev, Sergei Mikerin, Fedor Minakov, Andrey Simanchuk, Valery Antsygin, Valery Svetlichnyi, Valery Losev, Yury Andreev   +10 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Hyperuniform disordered terahertz quantum cascade laser [PDF]

Scientific Reports, 2016
AbstractLaser cavities have been realized in various different photonic systems. One of the forefront research fields regards the investigation of the physics of amplifying random optical media. The random laser is a fascinating concept because, further to the fundamental research investigating light transport into complex media, it allows us to obtain
R Degl' Innocenti, Y D Shah, L Masini, A Ronzani, A Pitanti, Y Ren, D S Jessop, A Tredicucci, H E Beere, D A Ritchie   +9 more
openaire   +6 more sources

Do's and Don'ts When Visiting Circularly Polarized Luminescence

Advanced Optical Materials, EarlyView.
This perspective presents our insights into the principles, challenges, and opportunities of circularly polarized luminescence (CPL). Highlighting key concepts such as the dissymmetry factor (glum) and molecular design strategies, we discuss advances in CPL efficiency, emerging NIR emitters, solid‐state applications, and the growing role of theory and ...
Rafael G. Uceda, Sandra Míguez‐Lago, Carlos M. Cruz, Sara P. Morcillo, Luis Álvarez de Cienfuegos, Víctor Blanco, Araceli G. Campaña, Maria Ribagorda, Delia Miguel, Juan M. Cuerva   +9 more
wiley   +1 more source

Efficient metallic spintronic emitters of ultrabroadband terahertz radiation

, 2016
Terahertz electromagnetic radiation is extremely useful for numerous applications such as imaging and spectroscopy. Therefore, it is highly desirable to have an efficient table-top emitter covering the 1-to-30-THz window whilst being driven by a low-cost,
Beaurepaire, E., Braun, L., Freimuth, F., Hannegan, J., Hayden, L. M., Henrizi, J., Jaiswal, S., Jakob, G., Jourdan, M., Kampfrath, T., Kläui, M., Kronenberg, A., Maldonado, P., Martens, U., Mokrousov, Y., Münzenberg, M., Oppeneer, P. M., Radu, I., Seifert, T., Turchinovich, D., Wolf, M.   +20 more
core   +1 more source

Efficiently Laser Driven Terahertz Surface Plasmon Polaritons on Long Metal Wire

Physical Review X
We experimentally demonstrate a novel scheme for efficiently generating intense terahertz surface plasmon polaritons (SPPs) on a subwavelength-diameter meter-long metal wire.
Shuo-ting Shao, Xiang-bing Wang, Rong Huang, Guang-yue Hu, Min Chen, Hui-bo Tang, Long-yu Kuang, Yu-xi Liu, Yu-qiu Gu, Yong-kun Ding, Hong-bin Zhuo, Ming-yang Yu   +11 more
doaj   +1 more source