Absorptivity Control Over the Visible to Mid-Infrared Range Using a Multilayered Film Consisting of Thermochromic Vanadium Dioxide

2022 ◽  
Vol 43 (3) ◽  
Author(s):  
Kazuma Isobe ◽  
Minoru Tomioka ◽  
Yutaka Yamada ◽  
Akihiko Horibe
Keyword(s):  
Vanadium Dioxide ◽  
Infrared Range ◽  
Multilayered Film ◽  
Mid Infrared

Relationship of the drying process of a corn grain with the thermal emissivity and optical interference in the mid infrared range

2017 ◽  
Vol 56 (12) ◽  
pp. 3470
Author(s):  
Carlos Villaseñor-Mora ◽  
Francisco J. Gantes-Nunez ◽  
Arturo Gonzalez-Vega ◽  
Victor H. Hernandez-Gonzalez
Keyword(s):  
Infrared Range ◽  
Drying Process ◽  
Optical Interference ◽  
Mid Infrared ◽  
Thermal Emissivity ◽  
Relationship Of ◽  
Corn Grain

scholarly journals First detection of ozone in the mid-infrared at Mars: implications for methane detection

2020 ◽  
Vol 639 ◽  
pp. A141 ◽  
Author(s):  
K. S. Olsen ◽  
F. Lefèvre ◽  
F. Montmessin ◽  
A. Trokhimovskiy ◽  
L. Baggio ◽  
...  
Keyword(s):  
Atmospheric Chemistry ◽  
Polar Vortex ◽  
Trace Gas ◽  
Spectral Signature ◽  
Infrared Range ◽  
Mid Infrared ◽  
Northern Latitudes ◽  
Ultraviolet Range ◽  
Vibration Rotation ◽  
Methane Detection

Aims. The ExoMars Trace Gas Orbiter was sent to Mars in March 2016 to search for trace gases diagnostic of active geological or biogenic processes. Methods. We report the first observation of the spectral features of Martian ozone (O3) in the mid-infrared range using the Atmospheric Chemistry Suite Mid-InfaRed (MIR) channel, a cross-dispersion spectrometer operating in solar occultation mode with the finest spectral resolution of any remote sensing mission to Mars. Results. Observations of ozone were made at high northern latitudes (>65°N) prior to the onset of the 2018 global dust storm (Ls = 163–193°). During this fast transition phase between summer and winter ozone distribution, the O3 volume mixing ratio observed is 100–200 ppbv near 20 km. These amounts are consistent with past observations made at the edge of the southern polar vortex in the ultraviolet range. The observed spectral signature of ozone at 3000–3060 cm−1 directly overlaps with the spectral range of the methane (CH4) ν3 vibration-rotation band, and it, along with a newly discovered CO2 band in the same region, may interfere with measurements of methane abundance.

scholarly journals Plasmon resonances in coupled Babinet complementary arrays in the mid-infrared range

2019 ◽  
Vol 27 (16) ◽  
pp. 22939 ◽  
Author(s):  
Goekalp Engin Akinoglu ◽  
Eser Metin Akinoglu ◽  
Krzysztof Kempa ◽  
Michael Giersig
Keyword(s):  
Infrared Range ◽  
Mid Infrared ◽  
Plasmon Resonances

scholarly journals New fluoroindate glass compositions

1993 ◽  
Vol 8 (4) ◽  
pp. 885-889 ◽  
Author(s):  
Y. Messaddeq ◽  
A. Delben ◽  
M.A. Aegerter ◽  
A. Soufiane ◽  
M. Poulain
Keyword(s):  
Optical Fibers ◽  
Glass Formation ◽  
Laser Wavelength ◽  
Infrared Range ◽  
Mid Infrared ◽  
Co Laser ◽  
Glass Stability ◽  
Wavelength Emission ◽  
Transmission Edge ◽  
Glass Compositions

The limits of glass formation of new fluoroindate glass compositions have been determined for the basic systems InF3–BaF2–GdF3−20ZnF2−20SrF2–2XFn where × = Na, La and InF3–BaF2−20ZnF2−20SrF2−2GdF3–XFn, where × = Ca and Y. The incorporation of small amounts of GaF3 and/or GdF3 increases strongly the thermal glass stability. All the fluoroindate compositions studied are highly transparent in the mid-infrared range; their transmission edge is shifted beyond 7 μm and the theoretical attenuation coefficient, extrapolated at the CO laser wavelength emission, is typically α = 100 dB/km. Large bulks and preforms have been prepared allowing the drawing of optical fibers.

Two-colour operation and applications of the CLIO FEL in the mid-infrared range

1998 ◽  
pp. 464-469
Author(s):  
R. Prazeres ◽  
F. Glotin ◽  
C. Insa ◽  
D.A. Jaroszynski ◽  
J.M. Ortega
Keyword(s):  
Infrared Range ◽  
Mid Infrared

scholarly journals Influence Mechanism of Cu Layer Thickness on Photoelectric Properties of IWO/Cu/IWO Films

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 113 ◽  
Author(s):  
Fengbo Han ◽  
Wenyuan Zhao ◽  
Ran Bi ◽  
Feng Tian ◽  
Yadan Li ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Optical Transmittance ◽  
Transparent Electrode ◽  
Infrared Range ◽  
X Ray Diffraction ◽  
Mid Infrared ◽  
Photoelectric Properties ◽  
Xrd Patterns ◽  
Quartz Substrates ◽  
Iron Manganese

Transparent conductive IWO/Cu/IWO (W-doped In2O3) films were deposited on quartz substrates by magnetron sputtering of IWO and Cu in the Ar atmosphere. The X-ray diffraction (XRD) patterns identified the cubic iron–manganese ore crystal structure of the IWO layers. The influence of the thickness of the intermediate ultra-thin Cu layers on the optical and electrical properties of the multilayer films was analyzed. As the Cu layer thickness increases from 4 to 10 nm, the multilayer resistivity gradually decreases to 4.5 × 10−4 Ω·cm, and the optical transmittance in the mid-infrared range increases first and then decreases with a maximum of 72%, which serves as an excellent candidate for the mid-infrared transparent electrode.

scholarly journals Graphene-Coated Elliptical Nanowires for Low Loss Subwavelength Terahertz Transmission

2019 ◽  
Vol 9 (11) ◽  
pp. 2351 ◽  
Author(s):  
Da Teng ◽  
Kai Wang ◽  
Zhe Li ◽  
Yongzhe Zhao ◽  
Gao Zhao ◽  
...  
Keyword(s):  
Chemical Potential ◽  
Infrared Range ◽  
Support Surface ◽  
Low Loss ◽  
Propagation Length ◽  
Promising Alternative ◽  
Mid Infrared ◽  
Terahertz Transmission ◽  
Mode Area ◽  
Thz Waves

Graphene has been recently proposed as a promising alternative to support surface plasmons with its superior performances in terahertz and mid-infrared range. Here, we propose a graphene-coated elliptical nanowire (GCENW) structure for subwavelength terahertz waveguiding. The mode properties and their dependence on frequency, nanowire size, permittivity and chemical potential of graphene are studied in detail by using a finite element method, they are also compared with the graphene-coated circular nanowires (GCCNWs). Results showed that the ratio of the long and short axes (b/a) of the elliptical nanowire had significant influence on mode properties, they also showed that a propagation length over 200 μm and a normalized mode area of approximately 10−4~10−3 could be obtained. Increasing b/a could simultaneously achieve both long propagation length and very small full width at half maximum (FWHM) of the focal spots. When b/a = 10, a pair of focal spots about 40 nm could be obtained. Results also showed that the GCENW had a better waveguiding performance when compared with the corresponding GCCNWs. The manipulation of Terahertz (THz) waves at a subwavelength scale using graphene plasmon (GP) may lead to applications in tunable THz components, imaging, and nanophotonics.

scholarly journals High-aspect-ratio mushroom-like silica nanopillars immersed in air: epsilon-near-zero metamaterials mediated by a phonon-polaritonic anisotropy

RSC Advances ◽  
2019 ◽  
Vol 9 (29) ◽  
pp. 16431-16438
Author(s):  
Kota Ito ◽  
Yuri Yamada ◽  
Atsushi Miura ◽  
Hideo Iizuka
Keyword(s):  
Block Copolymers ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Self Assembly ◽  
Infrared Range ◽  
Mid Infrared ◽  
Zero Response ◽  
Epsilon Near Zero

High-aspect-ratio mushroom-like silica nanopillars fabricated from self-assembly of block-copolymers exhibit a uniaxial epsilon-near-zero response in the mid-infrared range.

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