scholarly journals Enhanced mid-infrared transmission in heavily doped n-type semiconductor film based on surface plasmons

2008 ◽  
Vol 57 (11) ◽  
pp. 7210
Author(s):  
Hua Lei ◽  
Song Guo-Feng ◽  
Guo Bao-Shan ◽  
Wang Wei-Min ◽  
Zhang Yu
Keyword(s):  
Surface Plasmons ◽  
Semiconductor Film ◽  
Infrared Transmission ◽  
Mid Infrared ◽  
Type Semiconductor ◽  
Heavily Doped

Dirac Surface Plasmons in Photoexcited Bismuth Telluride Nanowires : Optical Pump-Terahertz Probe Spectroscopy

Nanoscale ◽  
2021 ◽  
Author(s):  
Mithun K P ◽  
Srabani Kar ◽  
Abinash Kumar ◽  
Victor Suvisesha Muthu Dharmaraj ◽  
Ravishankar Narayanan ◽  
...  
Keyword(s):  
Surface Plasmons ◽  
Bismuth Telluride ◽  
Topological Insulators ◽  
Collective Excitation ◽  
Optical Pump ◽  
Time Resolved ◽  
Mid Infrared ◽  
Plasmonic Materials ◽  
Probe Spectroscopy

Collective excitation of Dirac plasmons in graphene and topological insulators have opened new possibilities of tunable plasmonic materials ranging from THz to mid-infrared regions. Using time resolved Optical Pump -...

scholarly journals Localized surface plasmons in structures with linear Au nanoantennas on a SiO2/Si surface

2016 ◽  
Vol 7 ◽  
pp. 1519-1526 ◽  
Author(s):  
Ilya A Milekhin ◽  
Sergei A Kuznetsov ◽  
Ekaterina E Rodyakina ◽  
Alexander G Milekhin ◽  
Alexander V Latyshev ◽  
...  
Keyword(s):  
Penetration Depth ◽  
Surface Plasmons ◽  
Infrared Absorption ◽  
Transmission Spectra ◽  
Localized Surface Plasmons ◽  
Optical Phonons ◽  
Infrared Transmission ◽  
Phonon Modes ◽  
Electromagnetic Simulations

The study of infrared absorption by linear gold nanoantennas fabricated on a Si surface with underlying SiO2 layers of various thicknesses allowed the penetration depth of localized surface plasmons into SiO2 to be determined. The value of the penetration depth derived experimentally (20 ± 10 nm) corresponds to that obtained from electromagnetic simulations (12.9–30.0 nm). Coupling between plasmonic excitations of gold nanoantennas and optical phonons in SiO2 leads to the appearance of new plasmon–phonon modes observed in the infrared transmission spectra the frequencies of which are well predicted by the simulations.

Determination of Wavelength Accuracy in the Near-Infrared Spectral Region Based on NIST's Infrared Transmission Wavelength Standard SRM 1921

2000 ◽  
Vol 54 (3) ◽  
pp. 450-455 ◽  
Author(s):  
Stephen R. Lowry ◽  
Jim Hyatt ◽  
William J. McCarthy
Keyword(s):  
Reference Material ◽  
Standard Reference Material ◽  
Spectral Region ◽  
Near Infrared ◽  
Cost Effective ◽  
Infrared Transmission ◽  
Internal Reference ◽  
Mid Infrared ◽  
Infrared Spectral Region ◽  
Infrared Spectral

A major concern with the use of near-infrared (NIR) spectroscopy in many QA/QC laboratories is the need for a simple reliable method of verifying the wavelength accuracy of the instrument. This requirement is particularly important in near-infrared spectroscopy because of the heavy reliance on sophisticated statistical vector analysis techniques to extract the desired information from the spectra. These techniques require precise alignment of the data points between the vectors corresponding to the standard and sample spectra. The National Institute of Standards and Technology (NIST) offers a Standard Reference Material (SRM 1921) for the verification and calibration of mid-infrared spectrometers in the transmittance mode. This standard consists of a 38 μm-thick film of polystyrene plastic. While SRM 1921 works well as a mid-infrared standard, a thicker sample is required for use as a routine standard in the near-infrared spectral region. The general acceptance and proven reliability of polystyrene as a standard reference material make it a very good candidate for a cost-effective NIR standard that could be offered as an internal reference for every instrument. In this paper we discuss a number of the parameters in a Fourier transform (FT)-NIR instrument that can affect wavelength accuracy. We also report a number of experiments designed to determine the effects of resolution, sample position, and optics on the wavelength accuracy of the system. In almost all cases the spectral reproducibility was better than one wavenumber of the values extrapolated from the NIST reference material. This finding suggests that a thicker sample of polystyrene plastic that has been validated with the SRM 1921 standard would make a cost-effective reference material for verifying wavelength accuracy in a medium-resolution FT-NIR spectrometer.

scholarly journals Active control and spatial mapping of mid-infrared propagating surface plasmons

2009 ◽  
Vol 17 (9) ◽  
pp. 7019 ◽  
Author(s):  
T. Ribaudo ◽  
E. A. Shaner ◽  
S. S. Howard ◽  
C. Gmachl ◽  
X. J. Wang ◽  
...  
Keyword(s):  
Surface Plasmons ◽  
Active Control ◽  
Spatial Mapping ◽  
Mid Infrared

TATP and TNT detection by mid-infrared transmission spectroscopy

2009 ◽  
Author(s):  
Johannes Herbst ◽  
Jürgen Hildenbrand ◽  
Jürgen Wöllenstein ◽  
Armin Lambrecht
Keyword(s):  
Infrared Transmission ◽  
Mid Infrared ◽  
Transmission Spectroscopy ◽  
Tnt Detection

Fluorotellurite glasses with improved mid-infrared transmission

2003 ◽  
Vol 331 (1-3) ◽  
pp. 48-57 ◽  
Author(s):  
M.D O’Donnell ◽  
C.A Miller ◽  
D Furniss ◽  
V.K Tikhomirov ◽  
A.B Seddon
Keyword(s):  
Infrared Transmission ◽  
Mid Infrared
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