Detection and measurement of electroreflectance on quantum cascade laser device using Fourier transform infrared microscope

2013 ◽  
Vol 103 (23) ◽  
pp. 231106 ◽  
Author(s):  
Eli Christopher I. Enobio ◽  
Keita Ohtani ◽  
Yuzo Ohno ◽  
Hideo Ohno
Keyword(s):  
Fourier Transform ◽  
Quantum Cascade Laser ◽  
Fourier Transform Infrared ◽  
Laser Device ◽  
Quantum Cascade ◽  
Infrared Microscope

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

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

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.

Advantages of Dual-Beam Interferometry in Fourier Transform Infrared Spectrometry

1986 ◽  
Vol 40 (5) ◽  
pp. 628-632 ◽  
Author(s):  
Donald L. Beduhn ◽  
Robert L. White
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Infrared Spectrometry ◽  
Single Beam ◽  
Fiber Analysis ◽  
Dual Beam ◽  
Infrared Microscope ◽  
Order Of Magnitude ◽  
Infrared Spectrometer ◽  
Ft Ir

A dual-beam Fourier transform infrared spectrometer (FT-IR) is described. Sensitivity improvement, photometric accuracy, and instrument stability are evaluated by comparing dual-beam spectra with conventional single-beam spectra. Dual-beam FT-IR data acquisitions require an order of magnitude less measurement time than single-beam acquisitions for spectra of comparable signal-to-noise ratios. Application of dual-beam FT-IR for analysis of a highly transmitting sample is discussed. Single fiber analysis without masking and without an infrared microscope is described.

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

Novel Attenuated Total Reflection Fourier Transform Infrared Microscopy Using a Gem Quality Diamond as an Internal Reflection Element

2005 ◽  
Vol 59 (10) ◽  
pp. 1236-1241 ◽  
Author(s):  
Sanong Ekgasit ◽  
Pimthong Thongnopkun
Keyword(s):  
Fourier Transform ◽  
Total Internal Reflection ◽  
Fourier Transform Infrared ◽  
Normal Incidence ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Internal Reflection ◽  
The Novel ◽  
Infrared Microscope ◽  
Ft Ir

A novel technique for attenuated total reflection Fourier transform infrared (ATR FT-IR) spectral acquisition by an infrared microscope with a gem-quality faceted diamond as an internal reflection element (IRE) is introduced. Unlike conventional IREs, the novel diamond IRE has a sharp tip configuration instead of a flat tip configuration. Light at normal incidence was coupled into the diamond while the transflected radiation from the diamond was collected through the table facet by the built-in 15× Cassegrainian objective. The number of reflections in the novel diamond IRE equals two. The evanescent field generated under total internal reflection at the pavilion facet was exploited for ATR spectral acquisition of materials attached to the IRE. The observed ATR spectra were compared to those obtained via a traditional zinc selenide IRE.

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