Quantum cascade laser back‐reflection spectroscopy at grazing‐angle incidence using the fast Fourier transform as a data preprocessing algorithm

2019 ◽  
Vol 33 (9) ◽  
Author(s):  
Leonardo C. Pacheco‐Londoño ◽  
Nataly J. Galán‐Freyle ◽  
Amanda M, Figueroa‐Navedo ◽  
Ricardo Infante‐Castillo ◽  
José L. Ruiz‐Caballero ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Quantum Cascade Laser ◽  
Grazing Angle ◽  
Data Preprocessing ◽  
Reflection Spectroscopy ◽  
Quantum Cascade ◽  
Back Reflection

scholarly journals Enhanced RDX Detection Studies on Various Types of Substrates via Tunable Quantum Cascade Laser Spectrometer Coupled with Grazing Angle Probe

2019 ◽  
Vol 519 ◽  
pp. 012007 ◽  
Author(s):  
J L Ruiz-Caballero ◽  
L A Blanco-Riveiro ◽  
I A Ramirez-Marrero ◽  
L A Perez-Almodovar ◽  
A M Colon-Mercado ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Grazing Angle ◽  
Laser Spectrometer ◽  
Quantum Cascade ◽  
Angle Probe

Photocurrent Measurements on a Quantum Cascade Laser Device by Fourier Transform Infrared Microscope

2012 ◽  
Vol 51 (6S) ◽  
pp. 06FE15
Author(s):  
Eli Christopher I. Enobio ◽  
Hiroki Sato ◽  
Keita Ohtani ◽  
Yuzo Ohno ◽  
Hideo Ohno
Keyword(s):  
Fourier Transform ◽  
Quantum Cascade Laser ◽  
Fourier Transform Infrared ◽  
Laser Device ◽  
Quantum Cascade ◽  
Infrared Microscope

Analytical performance of μ-groove silicon attenuated total reflection waveguides

The Analyst ◽  
2019 ◽  
Vol 144 (10) ◽  
pp. 3398-3404 ◽  
Author(s):  
Julian Haas ◽  
Anja Müller ◽  
Lorenz Sykora ◽  
Boris Mizaikoff
Keyword(s):  
Fourier Transform ◽  
Quantum Cascade Laser ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Analytical Performance ◽  
Mid Infrared ◽  
Quantum Cascade

The analytical performance of micromachined μ-groove silicon attenuated total reflection (ATR) elements has been evaluated in a comparison of Fourier-transform infrared (FTIR) and quantum cascade laser (QCL) spectroscopy operating at mid-infrared (MIR) wavelengths.

Photocurrent Measurements on a Quantum Cascade Laser Device by Fourier Transform Infrared Microscope

2012 ◽  
Vol 51 ◽  
pp. 06FE15 ◽  
Author(s):  
Eli Christopher I. Enobio ◽  
Hiroki Sato ◽  
Keita Ohtani ◽  
Yuzo Ohno ◽  
Hideo Ohno
Keyword(s):  
Fourier Transform ◽  
Quantum Cascade Laser ◽  
Fourier Transform Infrared ◽  
Laser Device ◽  
Quantum Cascade ◽  
Infrared Microscope

Fourier transform and multiplexed intrapulse quantum cascade laser spectrometer measurements of NO2 and its dimer N2O4

2013 ◽  
Vol 91 (11) ◽  
pp. 941-948
Author(s):  
David Wilson ◽  
Geoffrey Duxbury ◽  
Nigel Langford
Keyword(s):  
Fourier Transform ◽  
Quantum Cascade Laser ◽  
Chemical Equilibrium ◽  
Path Length ◽  
Quantitative Comparison ◽  
Pulse System ◽  
Laser Spectrometer ◽  
Chirped Pulse ◽  
Quantum Cascade ◽  
Long Duration

A quantitative comparison has been made between the spectra recorded using an infrared Fourier transform (FT) spectrometer, and those based upon the use of chirped pulse quantum cascade (QC) lasers. The system chosen for this comparison is the chemical equilibrium between NO2 and its dimer N2O4. It is studied by making spectroscopic measurements of the dimerization of nitrogen dioxide (NO2). The intrapulse QC laser spectrometer used long duration pulses of wavelengths near 7.84, 7.46, and 6.14 μm, and a path length of 62 m, and the Université libre de Bruxelles (Brussels, Belgium) FTspectrometer used a path length of 21.1 cm. In the direct comparison of pairs of spectral regions allowed by the dual pulse system, it was possible to compare the 7.84 μm region, where both the spectra of the monomer and dimer are observed, with the 7.46 and 6.14 μm regions in which only monomer lines are detected. In the 7.84 μm region the NO2 absorption lines could be detected only when the dimer N2O4 is formed in the monomer NO2 in the QC laser spectra.

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