Results 21 to 30 of about 3,736,137 (310)

Investigation of Er3+-Doped Phosphate Glass for L+ Band Optical Amplification

open access: yesIEEE Photonics Journal, 2021
In this work, Er3+-doped phosphate glass with good flatness of the emission spectrum of the L+ band was prepared by optimizing the content of BaO. The absorption and emission spectra were measured.
Xiao Shen   +5 more
doaj   +1 more source

Real-time emission spectrum from a hybrid atom-optomechanical cavity [PDF]

open access: yes, 2015
We theoretically investigate the real-time emission spectrum of a two-level atom coupled to an optomechanical cavity (OMC). Using the quantum trajectory approach, we obtain the single-photon time-dependent spectrum in this hybrid system where the ...
I. Mirza
semanticscholar   +1 more source

On the integrated continuum radio spectrum of supernova remnant W44 (G34.7-0.4): New insights from Planck [PDF]

open access: yesSerbian Astronomical Journal, 2015
In this paper, the integrated continuum radio spectrum of supernova remnant (SNR) W44 was analyzed up to 70 GHz, testing the different emission models that can be responsible for its particular shape.
Onić D.
doaj   +1 more source

DETECTION OF AN UNIDENTIFIED EMISSION LINE IN THE STACKED X-RAY SPECTRUM OF GALAXY CLUSTERS [PDF]

open access: yes, 2014
We detect a weak unidentified emission line at E = (3.55–3.57) ± 0.03 keV in a stacked XMM-Newton spectrum of 73 galaxy clusters spanning a redshift range 0.01–0.35. When the full sample is divided into three subsamples (Perseus, Centaurus+Ophiuchus+Coma,
E. Bulbul   +5 more
semanticscholar   +1 more source

CIGALE: a python Code Investigating GALaxy Emission [PDF]

open access: yesAstronomy & Astrophysics, 2018
Context. Measuring how the physical properties of galaxies change across cosmic times is essential to understand galaxy formation and evolution. With the advent of numerous ground-based and space-borne instruments launched over the past few decades we ...
M. Boquien   +7 more
semanticscholar   +1 more source

InPBi Quantum Dots for Super-Luminescence Diodes

open access: yesNanomaterials, 2018
InPBi thin film has shown ultra-broad room temperature photoluminescence, which is promising for applications in super-luminescent diodes (SLDs) but met problems with low light emission efficiency.
Liyao Zhang   +4 more
doaj   +1 more source

Nitride superluminescent diodes with broadened emission spectrum fabricated using laterally patterned substrate.

open access: yesOptics Express, 2016
We demonstrate InGaN/GaN superluminescent diodes with broadened emission spectra fabricated on surface-shaped bulk GaN (0001) substrates. The patterning changes the local vicinal angle linearly along the device waveguide, which results in an indium ...
A. Kafar   +8 more
semanticscholar   +1 more source

Spectrum of Singly Charged Uranium (U II) : Theoretical Interpretation of Energy Levels, Partition Function and Classified Ultraviolet Lines

open access: yesAtoms, 2017
In an attempt to improve U II analysis, the lowest configurations of both parities have been interpreted by means of the Racah-Slater parametric method, using Cowan codes.
Ali Meftah   +3 more
doaj   +1 more source

Tailoring emission spectra by using microcavities

open access: yesResults in Physics, 2019
We present a theoretical model to describe emission spectrum of an emitter in a micro-cavity. Our model proposes that the spectrum in a metal micro-cavity depends on the product of the emission spectrum in free space and the local density of states (LDOS)
Muhammad Hanif Ahmed Khan Khushik   +1 more
doaj   +1 more source

Emission spectrum of the driven nonlinear oscillator [PDF]

open access: yes, 2012
Motivated by recent "circuit QED" experiments we investigate the noise properties of coherently driven nonlinear resonators. By using Josephson junctions in superconducting circuits, strong nonlinearities can be engineered, which lead to the appearance ...
St'ephane Andr'e   +4 more
semanticscholar   +1 more source

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