Highly efficient narrow-band absorption of a graphene-based Fabry–Perot structure at telecommunication wavelengths

2019 ◽  
Vol 44 (14) ◽  
pp. 3430 ◽  
Author(s):  
Kun Zhou ◽  
Qiang Cheng ◽  
Jinlin Song ◽  
Lu Lu ◽  
Zixue Luo
Keyword(s):  
Narrow Band ◽  
Highly Efficient ◽  
Fabry Perot ◽  
Band Absorption

scholarly journals Broadband Absorption in Patterned Metal/Weakly-Absorbing-Spacer/Metal with Graded Photonic Super-Crystal

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 114
Author(s):  
Steve Kamau ◽  
Safaa Hassan ◽  
Khadijah Alnasser ◽  
Hualiang Zhang ◽  
Jingbiao Cui ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Near Infrared ◽  
Broadband Absorption ◽  
Au Film ◽  
Fabry Perot ◽  
Absorbing Material ◽  
Multiple Band ◽  
Band Absorption ◽  
Plasmon Polaritons

It is challenging to realize the complete broadband absorption of near-infrared in thin optical devices. In this paper, we studied high light absorption in two devices: a stack of Au-pattern/insulator/Au-film and a stack of Au-pattern/weakly-absorbing-material/Au-film where the Au-pattern was structured in graded photonic super-crystal. We observed multiple-band absorption, including one near 1500 nm, in a stack of Au-pattern/spacer/Au-film. The multiple-band absorption is due to the gap surface plasmon polariton when the spacer thickness is less than 30 nm. Broadband absorption appears in the near-infrared when the insulator spacer is replaced by a weakly absorbing material. E-field intensity was simulated and confirmed the formation of gap surface plasmon polaritons and their coupling with Fabry–Pérot resonance.

scholarly journals Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates

2009 ◽  
Vol 131 (28) ◽  
pp. 9624-9625 ◽  
Author(s):  
Brian J. Walker ◽  
Gautham P. Nair ◽  
Lisa F. Marshall ◽  
Vladimir Bulović ◽  
Moungi G. Bawendi
Keyword(s):  
Quantum Dot ◽  
Narrow Band ◽  
Band Absorption

A green synthetic route to the highly efficient K2SiF6:Mn4+narrow-band red phosphor for warm white light-emitting diodes

2018 ◽  
Vol 6 (11) ◽  
pp. 2741-2746 ◽  
Author(s):  
Ziyang Hou ◽  
Xueyuan Tang ◽  
Xuefang Luo ◽  
Tianliang Zhou ◽  
Lin Zhang ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Narrow Band ◽  
Synthetic Route ◽  
Red Phosphor ◽  
Light Emitting ◽  
Highly Efficient ◽  
Warm White Light ◽  
White Light Emitting Diodes

A green synthetic route to the highly efficient K2SiF6:Mn4+narrow-band red phosphor for warm white light-emitting diodes.

Moisture-resistant and highly efficient narrow-band red-emitting fluoride phosphor K2NaGaF6:Mn4+ for warm white LED application

2019 ◽  
Vol 7 (26) ◽  
pp. 7906-7914 ◽  
Author(s):  
Jun Gao ◽  
Haomiao Zhu ◽  
Renfu Li ◽  
Decai Huang ◽  
Benlong Luo ◽  
...  
Keyword(s):  
Narrow Band ◽  
White Led ◽  
Site Occupation ◽  
Highly Efficient ◽  
Moisture Resistant

The site occupation/evolution of Mn4+ ions in K2NaGaF6 crystals and their excellent moisture-resistant performance.

A Simple and Reliable Dye Laser System for Spectroscopic Investigations

1972 ◽  
Vol 27 (4) ◽  
pp. 601-604b ◽  
Author(s):  
J. Kühl ◽  
G. Marowksy ◽  
P. Kunstmann ◽  
W. Schmidt
Keyword(s):  
Spectral Density ◽  
Narrow Band ◽  
Laser System ◽  
Interference Filter ◽  
Dye Laser ◽  
Quartz Plate ◽  
Simple System ◽  
Low Loss ◽  
Spectral Narrowing ◽  
Fabry Perot

Abstract Efficient spectral narrowing and accurately reproducible tuning of a dye laser has been achieved by the combination of a low-loss narrow-band interference filter and a solid-quartz-plate-Fabry-Perot-etalon. Bandwidths as small as 5-10-3 Å were obtained by this simple system increasing the spectral density by a factor of at least 2 · 103.

scholarly journals A Fabry–Perot interferometer-based camera for two-dimensional mapping of SO<sub>2</sub> distributions

2014 ◽  
Vol 7 (11) ◽  
pp. 3705-3715 ◽  
Author(s):  
J. Kuhn ◽  
N. Bobrowski ◽  
P. Lübcke ◽  
L. Vogel ◽  
U. Platt
Keyword(s):  
Theoretical Study ◽  
Point Sources ◽  
Imaging Method ◽  
Absorption Bands ◽  
Present Sample ◽  
Camera Systems ◽  
Fabry Perot ◽  
Band Absorption ◽  
Atmospheric Radiative Transfer ◽  
Dimensional Mapping

Abstract. We examine a new imaging method for the remote sensing of volcanic gases, which relies on the regularly spaced narrow-band absorption structures in the UV–VIS of many molecules. A Fabry–Perot interferometer (FPI) is used to compare the scattered sunlight radiance at wavelengths corresponding to absorption bands with the radiance at wavelengths in between the bands, thereby identifying and quantifying the gas. In this first theoretical study, we present sample calculations for the detection of sulfur dioxide (SO2). Optimum values for the FPI setup parameters are proposed. Furthermore, the performance of the FPI method is compared to SO2 cameras. We show that camera systems using an FPI are far less influenced by changes in atmospheric radiative transfer (e.g., due to aerosol) and have a great potential as a future technique for examining emissions of SO2 (or other gases) from volcanic sources and other point sources.

Total Band Absorption Models for Absorbing-Emitting Liquids: CCl4

1974 ◽  
Vol 96 (1) ◽  
pp. 27-31 ◽  
Author(s):  
J. L. Novotny ◽  
D. E. Negrelli ◽  
T. Van den Driessche
Keyword(s):  
Narrow Band ◽  
Absorption Process ◽  
Absorption Data ◽  
Gas Radiation ◽  
Spectral Integration ◽  
Absorption Models ◽  
Spectroscopic Information ◽  
Band Absorption ◽  
Two Parameter ◽  
Absorption Measurements

Predictions of the total band absorption are useful for describing the absorption process in calculations dealing with radiation interaction in absorbing-emitting liquids. Two two-parameter models, similar to the Elsasser and the statistical narrow band models used in gas radiation work, are developed for predicting the total band absorption in regions of the liquid CCl4 spectrum. The parameters, which are considered to be adjustable, can be determined from experimental total band absorption data or, if available, basic spectroscopic information. Results from the models are compared to experimental total band absorption measurements for CCl4 as well as a prediction based on spectral integration.

A Si-based tunable narrow-band flat-top filter with multiple-step-type Fabry-Perot cavity structure

2005 ◽  
Vol 17 (10) ◽  
pp. 2134-2136 ◽  
Author(s):  
Y.H. Zuo ◽  
R.W. Mao ◽  
Y.Y. Zheng ◽  
X. Shi ◽  
L. Zhao ◽  
...  
Keyword(s):  
Narrow Band ◽  
Cavity Structure ◽  
Fabry Perot ◽  
Step Type ◽  
Multiple Step
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