Probing Organometallic Reactions by Time-Resolved Infrared Spectroscopy in Solution and in the Solid State Using Quantum Cascade Lasers

2015 ◽  
Vol 69 (5) ◽  
pp. 519-524 ◽  
Author(s):  
James A. Calladine ◽  
Raphael Horvath ◽  
Andrew J. Davies ◽  
Alisdair Wriglesworth ◽  
Xue-Zhong Sun ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Solid State ◽  
Quantum Cascade Lasers ◽  
Time Resolved ◽  
Organometallic Reactions ◽  
Quantum Cascade ◽  
Time Resolved Infrared Spectroscopy ◽  
Cascade Lasers

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.

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

scholarly journals Time-Resolved Infrared Spectroscopy in Supercritical Fluids

1999 ◽  
Vol 19 (1-4) ◽  
pp. 133-139 ◽  
Author(s):  
Michael W. George ◽  
Martyn Poliakoff ◽  
Xue-Zhong Sun ◽  
David C. Grills
Keyword(s):  
Infrared Spectroscopy ◽  
Supercritical Fluids ◽  
Room Temperature ◽  
Noble Gas ◽  
Fast Time ◽  
Metal Carbonyls ◽  
Time Resolved ◽  
Organometallic Reactions ◽  
Time Resolved Infrared Spectroscopy ◽  
First Time

We have used fast Time-resolved Infrared Spectroscopy (TRIR) to probe organometallic reactions in supercritical fluids on the nanosecond time-scale. This has allowed us to identify, for the first time in solution at room temperature, organometallic noble gas complexes which are formed following irradiation of metal carbonyls in supercritical noble gas solution. We have found that these complexes are surprisingly stable and have comparable reactivity to organometallic alkane complexes. We have also studied the coordination of CO2 to metal centres in supercritical CO2 (scCO2) and provide the first evidence for the formation and reactivity of ɳ1-O bound metal CO2 complexes in solution at or above room temperature.

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.

scholarly journals Mid-Infrared Spectroscopy Platform Based on GaAs/AlGaAs Thin-Film Waveguides and Quantum Cascade Lasers

2016 ◽  
Vol 88 (5) ◽  
pp. 2558-2562 ◽  
Author(s):  
Markus Sieger ◽  
Julian Haas ◽  
Michael Jetter ◽  
Peter Michler ◽  
Matthias Godejohann ◽  
...  
Keyword(s):  
Thin Film ◽  
Infrared Spectroscopy ◽  
Quantum Cascade Lasers ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy ◽  
Quantum Cascade ◽  
Thin Film Waveguides ◽  
Cascade Lasers
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