Results 61 to 70 of about 8,192 (300)

Coded excitation of broadband terahertz using optical rectification in poled lithium niobate [PDF]

, 2005
We demonstrate coded excitation of broadband terahertz for imaging applications. The encoded transmitter uses optical rectification of femtosecond laser pulses in poled lithium niobate patterned with a 53-bit53-bit binary phase code.
Buma, Takashi, Norris, Theodore B.
core   +1 more source

Self‐Powered Flexible Triboelectric‐Gated Ion‐Gel Transistor for Neuromorphic Tactile Sensing and Human Activity Recognition

Advanced Materials, EarlyView.
A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho, Seoyeon Park, Youngmin Lee, Sejoon Lee   +3 more
wiley   +1 more source

Rigorous theory of molecular orientational nonlinear optics

AIP Advances, 2015
Classical statistical mechanics of the molecular optics theory proposed by Buckingham [A. D. Buckingham and J. A. Pople, Proc. Phys. Soc. A 68, 905 (1955)] has been extended to describe the field induced molecular orientational polarization effects on ...
Chong Hoon Kwak, Gun Yeup Kim
doaj   +1 more source

Fully automatic DOM generation method based on optical flow field dense image matching

Geo-spatial Information Science, 2023
Automatic Digital Orthophoto Map (DOM) generation plays an important role in many downstream works such as land use and cover detection, urban planning, and disaster assessment.
Wei Yuan, Xiuxiao Yuan, Yang Cai, Ryosuke Shibasaki   +3 more
doaj   +1 more source

Terahertz generation through optical rectification in reflection [PDF]

, 2023
International audienceIn this paper, we study terahertz generation through optical rectification in reflection at normal incidence in a dielectric nonlinear crystal.
Jean-Louis Coutaz, Hérault, Emilie, Dongwei Zhai, Coutaz, Jean-Louis, Emilie Herault, Kristensen, Mathias Hedegaard; id_orcid, Zhai, Dongwei, Skovsen, Esben; id_orcid, Skovsen, Esben, Esben Skovsen, Mathias Hedegaard Kristensen, Hedegaard Kristensen, Mathias   +11 more
core   +1 more source

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Electric‐field‐induced optical rectification in nitrobenzene [PDF]

, 1977
The first observation of dc‐electric‐field‐induced$optical rectification is eported. In this process a dc polarization is produced in a medium (in this case nitrobenzene) by the simultaneous presence of dc and optical electric fields.
J. F. Ward, Ward, J. F., Guha, J. K., J. K. Guha   +3 more
core   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

Ytterbium-laser-driven THz generation in thin lithium niobate at 1.9 kW average power in a passive enhancement cavity

APL Photonics
Single-cycle, high-power, high-repetition-rate THz pulse sources are becoming the cornerstone of several scientific and industrial applications. A promising and versatile method for high-power THz generation is optical rectification in nonlinear crystals
Edoardo Suerra, Francesco Canella, Dario Giannotti, Mohsen Khalili, Yicheng Wang, Kore Hasse, Sergiy Suntsov, Detlef Kip, Clara Saraceno, Simone Cialdi, Gianluca Galzerano   +10 more
doaj   +1 more source

Influence of pump wavelength and crystal length on the phase matching of optical rectification

, 2005
We present measurements on terahertz generation by optical rectification, in which both the thickness of the generation crystal and the wavelength of the generating optical pulse are varied.
Van der Valk, N.C.J. (author), Planken, P.C.M., Planken, P.C.M. (author), Van der Valk, N.C.J., Bakker, H.J., Buijserd, A.N. (author), Bakker, H.J. (author), Buijserd, A.N.   +7 more
core   +1 more source