Highly sensitive detection of trace gases using the time-resolved frequency downchirp from pulsed quantum-cascade lasers

2003 ◽  
Vol 20 (8) ◽  
pp. 1761 ◽  
Author(s):  
Michael T. McCulloch ◽  
Erwan L. Normand ◽  
Nigel Langford ◽  
Geoffrey Duxbury ◽  
D. A. Newnham
Keyword(s):  
Quantum Cascade Lasers ◽  
Trace Gases ◽  
Sensitive Detection ◽  
Time Resolved ◽  
Quantum Cascade ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Cascade Lasers

Highly sensitive detection of trace gases using pulsed quantum cascade lasers

2002 ◽  
Author(s):  
Geoffrey Duxbury ◽  
Erwan L. Normand ◽  
Nigel Langford ◽  
Michael T. McCulloch ◽  
Stephen Walker
Keyword(s):  
Quantum Cascade Lasers ◽  
Trace Gases ◽  
Sensitive Detection ◽  
Quantum Cascade ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Cascade Lasers

Time-resolved orientation detection system with quantum cascade lasers

2018 ◽  
Vol 89 (7) ◽  
pp. 073101
Author(s):  
Ke Ye ◽  
Xiaowei Chen ◽  
Wenwen Zhang ◽  
Yankun Lv ◽  
Lingpu Meng ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Detection System ◽  
Time Resolved ◽  
Quantum Cascade ◽  
Orientation Detection ◽  
Cascade Lasers

Time-resolved measurement of the local lattice temperature in terahertz quantum cascade lasers

2008 ◽  
Vol 92 (10) ◽  
pp. 101116 ◽  
Author(s):  
Miriam S. Vitiello ◽  
Gaetano Scamarcio ◽  
Vincenzo Spagnolo
Keyword(s):  
Quantum Cascade Lasers ◽  
Lattice Temperature ◽  
Time Resolved ◽  
Quantum Cascade ◽  
Local Lattice ◽  
Cascade Lasers

Eu3+‐labeled IgG‐based time‐resolved fluoroimmunoassay for highly sensitive detection of aflatoxin B1in feed

2017 ◽  
Vol 98 (2) ◽  
pp. 674-680 ◽  
Author(s):  
Xiaofei Hu ◽  
Jingjing Yao ◽  
Fangyu Wang ◽  
Mengqi Yin ◽  
Yaning Sun ◽  
...  
Keyword(s):  
Sensitive Detection ◽  
Time Resolved ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

scholarly journals Time-resolved spectral characterization of ring cavity surface emitting and ridge-type distributed feedback quantum cascade lasers by step-scan FT-IR spectroscopy

2014 ◽  
Vol 22 (3) ◽  
pp. 2656 ◽  
Author(s):  
Markus Brandstetter ◽  
Andreas Genner ◽  
Clemens Schwarzer ◽  
Elvis Mujagic ◽  
Gottfried Strasser ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Ring Cavity ◽  
Distributed Feedback ◽  
Cavity Surface ◽  
Time Resolved ◽  
Quantum Cascade ◽  
Ft Ir ◽  
Cascade Lasers ◽  
Ft Ir Spectroscopy

scholarly journals Monolithic, Optically Coupled, Multi-Section Mid-IR Quantum Cascade Lasers

Photonics ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 583
Author(s):  
Kamil Pierściński ◽  
Dorota Pierścińska ◽  
Grzegorz Sobczak ◽  
Aleksandr Kuźmicz ◽  
Krzysztof Chmielewski ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Wavelength Shift ◽  
Time Resolved ◽  
Design Modification ◽  
Quantum Cascade ◽  
Continuous Tuning ◽  
Wide Range ◽  
Cascade Lasers ◽  
Coupled Cavity

Mid-infrared (mid-IR λ ≈ 3–12 μm), single-mode-emission Quantum Cascade Lasers (QCLs) are of significant interest for a wide range of applications, especially as the laser sources are chosen for laser absorption spectroscopy. In this work, we present the design, fabrication and characterization of multi-section, coupled-cavity, mid-IR quantum cascade lasers. The purpose of this work is to propose a design modification for a coupled-cavity device, yielding a single-mode emission with a longer range of continuous tuning during the pulse, in contrast to a 2-section device. This effect was obtained and demonstrated in the work. The proposed design of a 3-section coupled-cavity QCL allows for a single-mode emission with 35 dB side-mode suppression ratio. Additionally, the time-resolved spectra of the wavelength shift during pulse operation, show a continuous tuning of ~3 cm−1 during the 2 μs pulse. The devices were fabricated in a slightly modified, standard laser process using dry etching.

Application of balanced detection to absorption measurements of trace gases with room-temperature, quasi-cw quantum-cascade lasers

2001 ◽  
Vol 40 (6) ◽  
pp. 812 ◽  
Author(s):  
David M. Sonnenfroh ◽  
W. Terry Rawlins ◽  
Mark G. Allen ◽  
Claire Gmachl ◽  
Federico Capasso ◽  
...  
Keyword(s):  
Room Temperature ◽  
Quantum Cascade Lasers ◽  
Trace Gases ◽  
Quantum Cascade ◽  
Balanced Detection ◽  
Cascade Lasers ◽  
Absorption Measurements
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