Two wavelength operation of an acousto-optically tuned quantum cascade laser and direct measurements of quantum cascade laser level lifetimes

2017 ◽  
Vol 110 (3) ◽  
pp. 031104 ◽  
Author(s):  
C. Kumar N. Patel ◽  
Rodolfo Barron-Jimenez ◽  
Ilya Dunayevskiy ◽  
Gene Tsvid ◽  
Arkadiy Lyakh
Keyword(s):  
Quantum Cascade Laser ◽  
Laser Level ◽  
Quantum Cascade ◽  
Direct Measurements

scholarly journals Selective measurements of NO, NO<sub>2</sub> and NO<sub>y</sub> in the free troposphere using quantum cascade laser spectroscopy

2013 ◽  
Vol 6 (4) ◽  
pp. 927-936 ◽  
Author(s):  
B. Tuzson ◽  
K. Zeyer ◽  
M. Steinbacher ◽  
J. B. McManus ◽  
D. D. Nelson ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Dynamic Range ◽  
Gold Catalyst ◽  
Reactive Nitrogen ◽  
Monitoring Site ◽  
Quantum Cascade ◽  
Direct Measurements ◽  
Averaging Time ◽  
Laser Spectroscopic

Abstract. A quantum cascade laser based absorption spectrometer for continuous and direct measurements of NO and NO2 was employed at the high-altitude monitoring site Jungfraujoch (3580 m a.s.l., Switzerland) during a three-month campaign in spring/summer 2012. The total reactive nitrogen, NOy, was also measured in the form of NO after conversion on a gold catalyst. The aim was to assess the suitability of the instrument for long-term monitoring of the main reactive nitrogen species under predominantly free tropospheric air conditions. A precision (1σ) of 10 and 3 ppt for NO and NO2 was achieved under field conditions after 180 s averaging time. The linear dynamic range of the instrument has been verified for both species from the detection limit up to 45 ppb. The spectrometer shared a common sampling inlet with a chemiluminescence-based analyzer. The comparison of the time series shows excellent agreement between the two techniques and demonstrates the adequacy of the laser spectroscopic approach for this kind of demanding environmental applications.

scholarly journals Selective measurements of NO, NO<sub>2</sub> and NO<sub>y</sub> in the free troposphere using quantum cascade laser spectroscopy

2012 ◽  
Vol 5 (6) ◽  
pp. 8969-8993 ◽  
Author(s):  
B. Tuzson ◽  
K. Zeyer ◽  
M. Steinbacher ◽  
J. B. McManus ◽  
D. D. Nelson ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Dynamic Range ◽  
Gold Catalyst ◽  
Reactive Nitrogen ◽  
Monitoring Site ◽  
Quantum Cascade ◽  
Direct Measurements ◽  
Averaging Time ◽  
Laser Spectroscopic

Abstract. A quantum cascade laser based absorption spectrometer for continuous and direct measurements of NO and NO2 was employed at the high-altitude monitoring site Jungfraujoch (3580 m a.s.l., Switzerland) during a three month campaign in Spring/Summer 2012. The total reactive nitrogen, NOy, was also measured in the form of NO after conversion on a gold catalyst. The aim was to assess the suitability of the instrument for long-term monitoring of the main reactive nitrogen species under predominantly free tropospheric air conditions. A precision (1σ) of 10 and 3 ppt for NO and NO2 was achieved with 180 s averaging time under field conditions. The linear dynamic range of the instrument has been verified for both species from the detection limit to &amp;approx;45 ppbv. The spectrometer shared a common sampling inlet with a chemiluminescence-based analyzer. The comparison of the time series shows excellent agreement between the two techniques and demonstrates the adequacy of the laser spectroscopic approach for this kind of demanding environmental applications.

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

A quantum cascade laser setup for studying irreversible photoreactions in H2O with nanosecond resolution and microlitre consumption

2020 ◽  
Vol 22 (45) ◽  
pp. 26459-26467
Author(s):  
Jessica L. Klocke ◽  
Tilman Kottke
Keyword(s):  
Infrared Spectroscopy ◽  
Quantum Cascade Laser ◽  
Time Resolved ◽  
Quantum Cascade ◽  
Time Resolved Infrared Spectroscopy ◽  
Laser Setup

Flavin photoreduction in H2O is elucidated by developing a quantum cascade laser setup for time-resolved infrared spectroscopy on irreversible reactions.

scholarly journals Multi-channel terahertz grating spectrometer with quantum-cascade laser and microbolometer array

2011 ◽  
Vol 99 (14) ◽  
pp. 141112 ◽  
Author(s):  
R. Eichholz ◽  
H. Richter ◽  
S. G. Pavlov ◽  
M. Wienold ◽  
L. Schrottke ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Quantum Cascade ◽  
Grating Spectrometer

scholarly journals Terahertz quantum cascade laser array with spatially-separated beams

2021 ◽  
Vol 143 ◽  
pp. 107346
Author(s):  
Yuan-Yuan Li ◽  
Fang-Yuan Zhao ◽  
Yu Ma ◽  
Wei-Jiang Li ◽  
Jun-Qi Liu ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Laser Array ◽  
Quantum Cascade
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