High-speed mid-infrared spectrometer based on wavelength-swept quantum cascade laser using asynchronous-signal method

2022 ◽  
Vol 149 ◽  
pp. 107800
Author(s):  
Junyi Chen ◽  
Hiromitsu Furukawa
Keyword(s):  
Quantum Cascade Laser ◽  
High Speed ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Infrared Spectrometer ◽  
Signal Method

High-Speed Mid-Infrared Frequency Modulation Spectroscopy Based on Quantum Cascade Laser

2016 ◽  
Vol 28 (16) ◽  
pp. 1727-1730 ◽  
Author(s):  
Chen Peng ◽  
Gang Chen ◽  
Jianping Tang ◽  
Lijun Wang ◽  
Zhongquan Wen ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Frequency Modulation ◽  
High Speed ◽  
Mid Infrared ◽  
Modulation Spectroscopy ◽  
Quantum Cascade

scholarly journals A Compact Mid-Infrared Spectroscopy System for Healthcare Applications Based on a Wavelength-Swept, Pulsed Quantum Cascade Laser

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3438
Author(s):  
Takuya Koyama ◽  
Naoto Shibata ◽  
Saiko Kino ◽  
Atsushi Sugiyama ◽  
Naota Akikusa ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Absorption Spectra ◽  
Quantum Cascade Laser ◽  
High Speed ◽  
Attenuated Total Reflection ◽  
Glucose Measurement ◽  
Least Squares Regression ◽  
Healthcare Applications ◽  
Mid Infrared ◽  
Quantum Cascade

A mid-infrared spectroscopic system using a high-speed wavelength-swept and pulsed quantum cascade laser (QCL) for healthcare applications such as blood glucose measurement is proposed. We developed an attenuated total reflection measurement system comprising the QCL with a micro-electromechanical system (MEMS)-scanning grating, hollow optical fibers, and InAsSb detector and tested its feasibility for healthcare applications. A continuous spectrum was obtained by integrating comb-shaped spectra, the timing of which was slightly shifted. As this method does not require complex calculations, absorption spectra are obtained in real-time. We found that the signal-to-noise ratio of the obtained spectrum had been improved by increasing the number of spectra that were integrated into the spectrum calculation. Accordingly, we succeeded in measuring the absorption spectrum of a 0.1% aqueous glucose solution. Furthermore, the absorption spectra of human lips were measured, and it was shown that estimation of blood glucose levels were possible using a model equation derived using a partial least squares regression analysis of the measured absorption spectra. The spectroscopic system based on the QCL with MEMS-scanning grating has the advantages of compactness and low cost over conventional Fourier transform infrared-based systems and common spectroscopic systems with a tunable QCL that has a relatively large, movable grating.

scholarly journals High-speed operation of single-mode tunable quantum cascade laser based on ultra-short resonant cavity

AIP Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 015325
Author(s):  
Yuhong Zhou ◽  
Junqi Liu ◽  
Shenqiang Zhai ◽  
Ning Zhuo ◽  
Jinchuan Zhang ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
High Speed ◽  
Resonant Cavity ◽  
Single Mode ◽  
Quantum Cascade

scholarly journals Mid-infrared quantum cascade laser frequency combs with a microstrip-like line waveguide geometry

2021 ◽  
Vol 118 (7) ◽  
pp. 071101
Author(s):  
Filippos Kapsalidis ◽  
Barbara Schneider ◽  
Matthew Singleton ◽  
Mathieu Bertrand ◽  
Emilio Gini ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Laser Frequency ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Waveguide Geometry

Direct Determination of Transparency Current in Mid-Infrared Quantum Cascade Laser

2012 ◽  
Author(s):  
D. G. Revin ◽  
R. S. Hassan ◽  
A. B. Krysa ◽  
K. Kennedy ◽  
A. N. Atkins ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Direct Determination ◽  
Mid Infrared ◽  
Quantum Cascade

scholarly journals A widely tunable 10-μm quantum cascade laser phase-locked to a state-of-the-art mid-infrared reference for precision molecular spectroscopy

2014 ◽  
Vol 104 (26) ◽  
pp. 264101 ◽  
Author(s):  
P. L. T. Sow ◽  
S. Mejri ◽  
S. K. Tokunaga ◽  
O. Lopez ◽  
A. Goncharov ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Molecular Spectroscopy ◽  
State Of The Art ◽  
Mid Infrared ◽  
Quantum Cascade
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