Results 81 to 90 of about 8,929 (287)

Theoretical demonstration of highly efficient cw THz generation by using composite photonic-structure elements [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
We theoretically propose one-dimensional composite photonic structures for high-resolution THz spectroanalysis. We compare the performance of two GaAs/AlAs composite photonic-structure devices, one with usual 1/4-wavelength layers of distributed Bragg ...
Oyamada A., Kitaguchi H., Ebata K., Ishihara H.   +3 more
doaj   +1 more source

Two-photon-induced photoconductivity enhancement in semiconductor microcavities: a theoretical investigation [PDF]

, 2002
We describe a detailed theoretical investigation of two-photon absorption photoconductivity in semiconductor microcavities. We show that high enhancement (by a factor of >10, 000) of the nonlinear response can be obtained as a result of the microcavity ...
Barry, Liam P., Bradley, Ann Louise, Donegan, John Francis, Dunbar, L.A., Folliot, H., Hegarty, J., Krug, T., Lynch, Michael   +7 more
core   +1 more source

Enhancing Synaptic Plasticity and Multistate Retention of Organic Neuromorphic Devices Using Anion‐Excessive Gel Electrolyte

Advanced Functional Materials, EarlyView.
Anion‐excessive gel‐based organic synaptic transistors (AEG‐OSTs) that can maintain electrical neutrality are developed to enhance synaptic plasticity and multistate retention. Key improvement is attributed to the maintenance of electrical neutrality in the electrolyte even after electrochemical doping, which reduces the Coulombic force acting on ...
Yousang Won, Jeongwoo Lee, Hyunwook Kim, Joon Hak Oh   +3 more
wiley   +1 more source

Enhanced broadband absorption in nanowire arrays with integrated Bragg reflectors

Nanophotonics, 2018
A near-unity unselective absorption spectrum is desirable for high-performance photovoltaics. Nanowire (NW) arrays are promising candidates for efficient solar cells due to nanophotonic absorption resonances in the solar spectrum. The absorption spectra,
Aghaeipour Mahtab, Pettersson Håkan
doaj   +1 more source

Flexible distributed Bragg reflectors as optical outcouplers for OLEDs based on a polymeric anode

Journal of Information Display, 2021
Top-emitting OLEDs (TOLEDs) represent a promising technology for the development of next-generation flexible and rollable displays, thanks to their improved light outcoupling and their compatibility with opaque substrates.
Carmela Tania Prontera, Marco Pugliese, Roberto Giannuzzi, Sonia Carallo, Marco Esposito, Giuseppe Gigli, Vincenzo Maiorano   +6 more
doaj   +1 more source

Coupling slot-waveguide cavities for large-scale quantum optical devices [PDF]

, 2010
By offering effective modal volumes significantly less than a cubic wavelength, slot-waveguide cavities offer a new in-road into strong atom-photon coupling in the visible regime.
Almeida, Andrew D. Greentree, Angelakis, Aspnes, Barmenkov, Barrios, Barth, Beveratos, Brant C. Gibson, Buluta, Chun-Hsu Su, Cooper, Dell’Olio, Feynman, François Ladouceur, Fu, Fu, Gaebel, Gondarenko, Greentree, Greentree, Hartmann, Hennessy, Hiscocks, Hiscocks, Huang, Jelezko, Kapon, Koch, Kurtsiefer, Lloyd C. L. Hollenberg, Mark P. Hiscocks, Mu, Noda, Notomi, Pruessner, Robinson, Su, Su, Säynätjoki, Xu, Yariv   +41 more
core   +2 more sources

Transition From Lattice Oxygen to Radical‐Mediated Oxidation in Ammonium‐Intercalated Birnessite Catalysts for Selective Valorization of Biomass to Produce Formic Acid

Advanced Functional Materials, EarlyView.
The catalytic valorization of biomass represents an essential approach for achieving sustainable chemical production, with formic acid (FA) being recognized as a valuable platform chemical for hydrogen storage and environmentally friendly synthetic applications.
Yiqi Geng, Wei Xiong, Wenhua Xue, Jian Ye, Puranjan Mishra, Rajenahally V. Jagadeesh, Jun Zhao   +6 more
wiley   +1 more source

Arbitrarily-Wide-Band Dielectric Mirrors and Their Applications to SiGe Solar Cells

IEEE Photonics Journal, 2015
The dielectric mirror is an important optical component for optoelectronic devices, passive photonic devices, and solar cells. Unfortunately, the reflection bandwidth of distributed Bragg reflectors (DBRs) and high-index contrast mirrors (HCGs) are ...
Yan Kai Zhong, Sze Ming Fu, Sheng Lun Yan, Po Yu Chen, Albert Lin   +4 more
doaj   +1 more source

One-dimensional disordered photonic structures with two or more materials

, 2018
Here we would like to discuss the light transmission modulation by periodic and disordered one dimensional (1D) photonic structures. In particular, we will present some theoretical and experimental findings highlighting the peculiar optical properties of:
Bellingeri, Michele, Cassi, Davide, Chiasera, Alessandro, Criante, Luigino, Della Valle, Giuseppe, Ferrari, Maurizio, Kriegel, Ilka, Lukowiak, Anna, Ramponi, Roberta, Scotognella, Francesco, Varas, Stefano, Zur, Lidia   +11 more
core   +1 more source

Cavity enhanced reflector based hybrid silicon laser [PDF]

, 2010
We present a novel approach to integrate III-V based hybrid lasers on a silicon platform using resonant grating structures as compact and highly-reflective ...
Baets, Roel, De Koninck, Yannick, Roelkens, Günther   +2 more
core   +2 more sources