Mid-infrared Fourier-transform spectrometer based on metamaterial materal cladding suspended silicon waveguides

2022 ◽  
Author(s):  
Thi Thuy Duong Dinh ◽  
xavier leroux ◽  
Natnicha Koompai ◽  
Daniele Melati ◽  
Miguel Montesinos Ballester ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Spectrometer ◽  
Mid Infrared ◽  
Silicon Waveguides

scholarly journals Analysis of new species retrieved from MIPAS

2014 ◽  
Vol 56 ◽  
Author(s):  
Shaomin Cai ◽  
Anu Dudhia
Keyword(s):  
Fourier Transform ◽  
New Species ◽  
High Resolution ◽  
Trace Gases ◽  
Michelson Interferometer ◽  
Emission Spectra ◽  
Fourier Transform Spectrometer ◽  
Mid Infrared ◽  
The Third ◽  
Atmospheric Sounding

The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) instrument which operated on the Envisat satellite from 2002-2012 is a Fourier transform spectrometer for the measurement of high-resolution gaseous emission spectra at the Earth's limb. It operates in the near- to mid-infrared, where many of the main atmospheric trace gases have important emission features. The initial operational products were profiles of Temperature, H2O, O3, CH4, N2O, HNO3, and NO2, and this list was recently extended to include N2O5, ClONO2, CFC-11 and CFC-12. Here we present preliminary results of retrievals of the third set of species under consideration for inclusion in the operational processor: HCN, CF4, HCFC-22, COF2 and CCl4.

Overtone spectra of parahydrogen and orthodeuterium in the liquid phase

2000 ◽  
Vol 78 (4) ◽  
pp. 317-325 ◽  
Author(s):  
M Mengel ◽  
B P Winnewisser ◽  
M Winnewisser
Keyword(s):  
Fourier Transform ◽  
Liquid Phase ◽  
Solid Phase ◽  
Fourier Transform Spectrometer ◽  
Mid Infrared ◽  
Intensity Parameters ◽  
Absorption Features

We report the results of our observations of liquid parahydrogen in the mid-infrared and of liquid parahydrogen and orthodeuterium in their first and second overtone regions using a Bruker IFS 120 HR Fourier transform spectrometer. We have determined intensity parameters for individual absorption features where possible and indicate analogies between the spectrum of the liquid and the corresponding spectrum of the solid phase of the hydrogens. PACS Nos.: 33.20Ea, 33.70Fd, 67.90+z

scholarly journals Mid-infrared integrated wideband duel-polarization Fourier-transform spectrometer

2019 ◽  
Author(s):  
Qiankun Liu ◽  
Joan Manel Ramirez ◽  
Vladyslav Vakarin ◽  
Xavier Le Roux ◽  
Carlos A. Alonso-Ramos ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Spectrometer ◽  
Mid Infrared

scholarly journals Mid-Infrared Silicon-on-Insulator Fourier-Transform Spectrometer Chip

2016 ◽  
Vol 28 (4) ◽  
pp. 528-531 ◽  
Author(s):  
Milos Nedeljkovic ◽  
Aitor V. Velasco ◽  
Ali Z. Khokhar ◽  
Andre Delage ◽  
Pavel Cheben ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Silicon On Insulator ◽  
Fourier Transform Spectrometer ◽  
Mid Infrared

scholarly journals Experiments on the Porch Swing Bearing of Michelson Interferometer for Low Resolution FTIR

2013 ◽  
Vol 2013 ◽  
pp. 1-9
Author(s):  
Tuomas Välikylä ◽  
Jyrki Kauppinen
Keyword(s):  
Fourier Transform ◽  
Laser Beam ◽  
Modulation Depth ◽  
Michelson Interferometer ◽  
Fourier Transform Spectrometer ◽  
Linear Motion ◽  
Low Resolution ◽  
Mid Infrared ◽  
Manufacturing Tolerances ◽  
Adjustment Mechanisms

Porch swing bearing for the linear motion of the mirror in Michelson interferometer for mid-infrared low resolution Fourier transform spectrometer was studied experimentally using the modulation depth of the collimated laser beam. The mirror tilting was measured to be lower than 5 μrad over 3 mm mirror travel using two different bearings assemblies. Additionally, the manufacturing tolerances of the bearing type were proved to be loose enough not to limit the interferometer application. These demonstrate that the porch swing without any adjustment mechanisms provides the sufficient motion linearity.

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