Results 101 to 110 of about 319,656 (388)
All Optical Logic Gates: A Tutorial
International Journal of Information and Communication Technology Research, 2012 In this paper we describe the performances of different kinds of all-optical logic gates reported up to now. We introduce all-optical logic gates based on semiconductor optical amplifiers such as ultrahigh speed logic gates exploiting four-wave mixing ...
Fatemeh Davoodi, Nosrat Granpayeh
doaj
Room-Temperature Continuous-Wave Vertical-Cavity Single-Quantum-Well Microlaser Diodes [PDF]
, 1989 Room-temperature continuous and pulsed lasing of vertical-cavity, single-quantum-well, surface-emitting microlasers is achieved at ~983nm. The active Ga[sub][0-8]In[sub][0-2]As single quantum well is 100 [angstroms] thick.
Florez, L. T. +5 more
core +1 more source
Advanced Functional Materials, EarlyView.This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri +6 more
wiley +1 more source
Cascaded wavelength conversions using four-wave mixing in semiconductor optical amplifiers [PDF]
, 1997 Wavelength conversion in wavelength-division multiplexed (WDM) communication systems would provide significant network performance improvement. Optoelectronic, cross-gain saturation, and cross phase saturation wavelength converters are candidate ...
Geraghty, David F. +3 more
core
Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures
Advanced Functional Materials, EarlyView.3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina +11 more
wiley +1 more source
Laser gain spectra of quantum wells and multiplasmon optical transitions
Moldavian Journal of the Physical Sciences, 2005 A novel multi-plasmon concept of a light absorption and laser gain of low-dimensional structures are comprehensively discussed. A Generalized Semiconductor Bloch Equations are derived with account of multi-plasmon optical transitions ...
Gurău, Virginia
doaj
Polarization-dependent optical nonlinearities of multiquantum-well laser amplifiers studied by four-wave mixing [PDF]
, 1997 We present a detailed study of the polarization properties of four-wave mixing in multiquantum-well (MQW) semiconductor optical amplifiers (SOA's). In particular, the polarization selection rules relevant to all processes contributing to the generation ...
Hunziker, Guido +3 more
core
Quantum-well design for monolithic optical devices with gain and saturable absorber sections [PDF]
, 2004 We propose a new design of semiconductor quantum-well heterostructures, which can be used to improve the performance of monolithic mode-locked diode lasers and all-optical signal-processing devices with gain and saturable absorber sections.
Avrutin, E A, Nikolaev, V V
core +1 more source
Advanced Functional Materials, EarlyView.The chemical composition and band alignment are systematically investigated at the TiO2/InP heterointerface. Thin TiO2 films are deposited by ALD on atomically ordered, P‐terminated p‐InP(100). By combining UPS, XPS, and ab initio molecular dynamics, the atomistic structure and electronic alignment are revealed.
Mohammad Amin Zare Pour +11 more
wiley +1 more source
High-speed pulse train amplification in semiconductor optical amplifiers with optimized bias current [PDF]
, 2017 In this paper, we have experimentally investigated the optimized bias current of semiconductor optical amplifiers (SOAs) to achieve high-speed input pulse train amplification with high gain and low distortion.
Ghafouri-Shiraz, H. +3 more
core +1 more source