Results 21 to 30 of about 411,959 (304)

Room temperature emission spectroscopy of GeSn waveguides under optical pumping

AIP Advances, 2022
Waveguides were fabricated from highly n-type doped GeSn layers with Sn content at 5.4%–6.2% and grown on Ge-buffered Si substrates. The waveguides were optically pumped using a 976 nm continuous-wave laser, and the waveguide emission spectrum was ...
Z. Li, Y. Zhao, J. D. Gallagher, D. Lombardo, A. Sarangan, Imad Agha, J. Kouvetakis, J. Menéndez, J. Mathews   +8 more
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Construção de um espectrógrafo de projeção e sua utilização em demonstrações de espectroscopia óptica Construction of a projection spectrograph and its use in optical spectroscopy classrooms demonstrations

Química Nova, 2008
This article describes a projection spectrograph for use in optical spectroscopy classrooms demonstrations. The apparatus is based on an overhead projector and permits the visualization of several phenomena such as, light dispersion by diffraction ...
Eduardo Ribeiro de Azevedo, Luiz Antônio de Oliveira Nunes   +1 more
doaj   +1 more source

Disc loss and renewal in A0535+26 [PDF]

, 1999
This paper presents observations of the Be/X-ray binary system A0535+26 revealing the first observed loss of its circumstellar disc, demonstrated by the loss of its JHK infrared excess and optical/IR line emission. However optical/IR spectroscopy reveals
Alonso, Clark, Clark, Clark, Clark, Coe, Hayakawa, Huang, I. A. Steele, J. Fabregat, Janot-Pacheco, M. J. Coe, Manfroid, N. J. Haigh, Roche, Rosenberg, Steele, Wang   +17 more
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CdZnO coated film: A material for photovoltaic applications

Results in Physics, 2018
The present study reports structural and optical parameters of wide band gap oxide thick film prepared by screen-printing followed by sintering route. Characterization of the samples was carried out with UV-spectroscopy, XRD, SEM, and Photoluminous study.
R.A. Zargar, M.A. Bhat, H.A. Reshi, S.D. Khan   +3 more
doaj   +1 more source

Optical Versus Mid-Infrared Spectroscopic Classification of Ultraluminous Infrared Galaxies [PDF]

, 1998
The origin of huge infrared luminosities of ultraluminous infrared galaxies (ULIGs) is still in question. Recently, Genzel et al. made mid-infrared (MIR) spectroscopy of a large number of ULIGs and found that the major energy source in them is massive ...
Akira Yoshino, Boksenberg A., Heckman T. M., Johansson L., Johansson L., Johansson L., Lutz D., Lutz D., Maoz D., Moorwood A. F. M., Shingo Nishiura, Terlevich R., Voit G. M., Yoshiaki Taniguchi, Youichi Ohyama, Young S.   +15 more
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Gaseous Material Orbiting the Polluted, Dusty White Dwarf HE1349-2305 [PDF]

, 2012
We present new spectroscopic observations of the polluted, dusty, helium-dominated atmosphere white dwarf star HE1349-2305. Optical spectroscopy reveals weak CaII infrared triplet emission indicating that metallic gas debris orbits and is accreted by the
Bessel, Brinkworth, Brinkworth, Debes, Dufour, Dufour, Dufour, Dufour, Epchtein, Farihi, Farihi, Farihi, Girven, Gänsicke, Gänsicke, Jura, Jura, Jura, Klein, Klein, Martin, Melis, Melis, Morrissey, Skrutskie, Zuckerman, Zuckerman   +26 more
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Advanced in-situ electron-beam lithography for deterministic nanophotonic device processing [PDF]

, 2015
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Review of Scientific Instruments 86, 073903 (2015) and may be found at https://doi.org/10.1063/1 ...
Gschrey, Manuel, Heindel, Tobias, Kaganskiy, Arsenty, Reitzenstein, Stephan, Rodt, Sven, Schlehahn, Alexander, Schmidt, Ronny, Schulze, Jan-Hindrik, Strittmatter, André   +8 more
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Modular Ceramic-Polymeric Device for Analysis of Selected Elements in Liquid Using Microplasma

Proceedings, 2018
Miniaturization of devices for analysis of chemical composition is being still developed. In this article we present a portable device with a microplasma excitation source.
Tomasz Matusiak, Jan Macioszczyk, Krzysztof Świderski, Piotr Jamróz, Paweł Pohl, Leszek Golonka   +5 more
doaj   +1 more source

The AGN and Gas Disk in the Low Surface Brightness Galaxy PGC045080 [PDF]

, 2007
We present radio observations and optical spectroscopy of the giant low surface brightness (LSB) galaxy PGC 045080 (or 1300+0144). PGC 045080 is a moderately distant galaxy having a highly inclined optical disk and massive HI gas content. Radio continuum
Das, M., Kantharia, N., McGaugh, S. S., Prabhu, T. P., Ramya, S., Vogel, S. N.   +5 more
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Terahertz Spectroscopy of Thermal Radiation from AlGaN/GaN Heterostructure on Sapphire at Low Temperatures

Applied Sciences, 2020
Terahertz spectroscopy of thermal radiation from electrically pumped AlGaN/GaN structures on sapphire substrate was investigated in this work. Comparison of experimental THz spectroscopy results to theoretical spectra calculations shows that thermal ...
Ignas Grigelionis, Irmantas Kašalynas
doaj   +1 more source