scholarly journals High-speed quantum cascade detector characterized with a mid-infrared femtosecond oscillator

2021 ◽  
Vol 29 (4) ◽  
pp. 5774
Author(s):  
Johannes Hillbrand ◽  
Léonard Matthieu Krüger ◽  
Sandro Dal Cin ◽  
Hedwig Knötig ◽  
Jonas Heidrich ◽  
...  
Keyword(s):  
High Speed ◽  
Mid Infrared ◽  
Quantum Cascade

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

High-speed mid-infrared hyperspectral imaging using quantum cascade lasers

2017 ◽  
Author(s):  
David B. Kelley ◽  
Anish K. Goyal ◽  
Ninghui Zhu ◽  
Derek A. Wood ◽  
Travis R. Myers ◽  
...  
Keyword(s):  
Hyperspectral Imaging ◽  
High Speed ◽  
Quantum Cascade Lasers ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Cascade Lasers

Ultimate response time in mid-infrared high-speed low-noise quantum cascade detectors

2021 ◽  
Vol 118 (4) ◽  
pp. 041101
Author(s):  
Tatsuo Dougakiuchi ◽  
Akio Ito ◽  
Masahiro Hitaka ◽  
Kazuue Fujita ◽  
Masamichi Yamanishi
Keyword(s):  
Response Time ◽  
High Speed ◽  
Low Noise ◽  
Mid Infrared ◽  
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 Application of High-Speed Quantum Cascade Detectors for Mid-Infrared, Broadband, High-Resolution Spectroscopy

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5706
Author(s):  
Tatsuo Dougakiuchi ◽  
Naota Akikusa
Keyword(s):  
High Resolution ◽  
High Speed ◽  
Dynamic Range ◽  
Molecular Spectroscopy ◽  
Low Noise ◽  
Heterodyne Detection ◽  
High Resolution Spectroscopy ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Noise Characteristics

Broadband, high-resolution, heterodyne, mid-infrared absorption spectroscopy was performed with a high-speed quantum cascade (QC) detector. By strictly reducing the device capacitance and inductance via air-bridge wiring and a small mesa structure, a 3-dB frequency response over 20 GHz was obtained for the QC detector, which had a 4.6-μm peak wavelength response. In addition to the high-speed, it exhibited low noise characteristics limited only by Johnson–Nyquist noise, bias-free operation without cooling, and photoresponse linearity over a wide dynamic range. In the detector characterization, the noise-equivalent power was 7.7 × 10−11 W/Hz1/2 at 4.6 μm, and it had good photoresponse linearity up to 250 mW, with respect to the input light power. Broadband and high-accuracy molecular spectroscopy based on heterodyne detection was demonstrated by means of two distributed-feedback 4.5-μm QC lasers. Specifically, several nitrous oxide absorption lines were acquired over a wavelength range of 0.8 cm−1 with the wide-band QC detector.

High-speed digital data transmission using mid-infrared quantum cascade lasers

2001 ◽  
Vol 37 (21) ◽  
pp. 1290 ◽  
Author(s):  
R. Martini ◽  
R. Paiella ◽  
C. Gmachl ◽  
F. Capasso ◽  
E.A. Whittaker ◽  
...  
Keyword(s):  
Data Transmission ◽  
High Speed ◽  
Quantum Cascade Lasers ◽  
Digital Data ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Cascade Lasers

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
Sign in / Sign up

Export Citation Format

Share Document