Results 11 to 20 of about 1,179,244 (300)
An Innovative Parabolic Trough Collector Design with a Twin-Cavity Receiver
Applied Sciences, 2022 An innovative parabolic trough concentrator coupled to a twin cavity receiver (PTC-TC) in evacuated tube conditions is investigated thermally and optically.
Dimitrios N. Korres +3 more
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Influence of a Thermal Pad on Selected Parameters of Power LEDs
Energies, 2020 This paper is devoted to the analysis of the influence of thermal pads on electric, optical, and thermal parameters of power LEDs. Measurements of parameters, such as thermal resistance, optical efficiency, and optical power, were performed for selected ...
Krzysztof Górecki +3 more
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Optically Efficient Nonlinear Signal Processing [PDF]
IEEE Journal of Selected Topics in Quantum Electronics, 2011 Optical signal processing techniques employ a wide range of devices and various nonlinearities to achieve multiple network functionalities. The choice of nonlinearity can also impact the relative efficiency, both in terms of energy and material consumption, of the signal processing function being implemented.
Willner, Alan E +6 more
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Energy-efficiency improvements for optical access [PDF]
, 2014 This article discusses novel approaches to improve energy efficiency of different optical access technologies, including time division multiplexing passive optical network (TDM-PON), time and wavelength division multiplexing PON (TWDM-PON), point-to ...
Anthapadmanabhan, P +8 more
core +1 more source
Anisotropic materials in OLEDs for high outcoupling efficiency [PDF]
, 2015 We present the results of an optical study in which we evaluate the effect of anisotropic electron transport layers (ETL) and anisotropic hole transport layers (HTL) on the outcoupling efficiency of bottom emitting organic light emitting diodes (OLEDs ...
Callens, Michiel +2 more
core +1 more source
Energies, 2023 An experiment was conducted to test the optical efficiency of the lenses of the Concentrating Photovoltaic Glazing (CoPVG) concept. The CoPVG is a seasonal glazing system consisting of longitudinal prismatic lenses.
Mohammad Ghoraishi +4 more
doaj +1 more source
Resource-Efficient Linear Optical Quantum Computation [PDF]
Physical Review Letters, 2005 We introduce a scheme for linear optics quantum computation, that makes no use of teleported gates, and requires stable interferometry over only the coherence length of the photons. We achieve a much greater degree of efficiency and a simpler implementation than previous proposals.
Browne, D.E., Rudolph, T.
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Coherence and Efficiency in Nonlinear Optical Processes [PDF]
, 1972 A remarkable difference between linear and nonlinear processes lies in the fact that the efficiency of the latter depends on the coherence properties of the electromagnetic field (pump) from which the process is ...
Crosignani, B. +4 more
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Measurement-efficient optical wavemeters
Optics Express, 2004 We describe a method for efficiently determining the wavelength of a monochromatic source and provide an experimental proof-of-concept. The photomeasurement efficiency for a wavemeter can be written as eta(N,q) = (1 + logqN)/m, where N is the number of spectral channels, q is the number of distinguishable output levels per photodetector, and m is the ...
P, Potuluri +3 more
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Efficient OPSL-pumped mode-locked Yb:Lu2O3 laser with 67% optical-to-optical efficiency [PDF]
Scientific Reports, 2016 AbstractWe present a mode-locked Yb:Lu2O3 laser with up to 67% of optical-to-optical efficiency. By utilizing a high brightness optically pumped semiconductor laser (OPSL) as a pump source and using a semiconductor saturable absorber mirror (SESAM) we obtained self-starting mode locking. A pulse duration of 571 fs at 4.73 W of average output power with
Heuer, Alexander M. +4 more
openaire +3 more sources