Next Article in Journal
Optimization Design and Flexible Detection Method of a Surface Adaptation Wall-Climbing Robot with Multisensor Integration for Petrochemical Tanks
Previous Article in Journal
Simulation of Fresnel Zone Plate Imaging Performance with Number of Zones
Previous Article in Special Issue
Theoretical and Experimental Study of Heterodyne Phase-Sensitive Dispersion Spectroscopy with an Injection-Current-Modulated Quantum Cascade Laser
Article

Widely-Tunable Quantum Cascade-Based Sources for the Development of Optical Gas Sensors

1
Unité Mixte de Recherche 7331, Groupe de Spectrométrie Moléculaire et Atmosphérique, Centre National de la Recherche Scientifique, Université de Reims Champagne Ardenne, 51097 Reims, France
2
mirSense, Centre d’intégration NanoINNOV, 91120 Palaiseau, France
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(22), 6650; https://doi.org/10.3390/s20226650
Received: 30 September 2020 / Revised: 16 November 2020 / Accepted: 16 November 2020 / Published: 20 November 2020
Spectroscopic techniques based on Distributed FeedBack (DFB) Quantum Cascade Lasers (QCL) provide good results for gas detection in the mid-infrared region in terms of sensibility and selectivity. The main limitation is the QCL relatively low tuning range (~10 cm−1) that prevents from monitoring complex species with broad absorption spectra in the infrared region or performing multi-gas sensing. To obtain a wider tuning range, the first solution presented in this paper consists of the use of a DFB QCL array. Tuning ranges from 1335 to 1387 cm−1 and from 2190 to 2220 cm−1 have been demonstrated. A more common technique that will be presented in a second part is to implement a Fabry–Perot QCL chip in an external-cavity (EC) system so that the laser could be tuned on its whole gain curve. The use of an EC system also allows to perform Intra-Cavity Laser Absorption Spectroscopy, where the gas sample is placed within the laser resonator. Moreover, a technique only using the QCL compliance voltage technique can be used to retrieve the spectrum of the gas inside the cavity, thus no detector outside the cavity is needed. Finally, a specific scheme using an EC coherent QCL array can be developed. All these widely-tunable Quantum Cascade-based sources can be used to demonstrate the development of optical gas sensors. View Full-Text
Keywords: quantum cascade laser; widely tunable laser sources; mid-infrared laser sources; laser spectroscopy; QCL array; external-cavity systems; intra-cavity laser absorption spectroscopy; compliance voltage technique; gas sensors quantum cascade laser; widely tunable laser sources; mid-infrared laser sources; laser spectroscopy; QCL array; external-cavity systems; intra-cavity laser absorption spectroscopy; compliance voltage technique; gas sensors
Show Figures

Figure 1

MDPI and ACS Style

Zéninari, V.; Vallon, R.; Bizet, L.; Jacquemin, C.; Aoust, G.; Maisons, G.; Carras, M.; Parvitte, B. Widely-Tunable Quantum Cascade-Based Sources for the Development of Optical Gas Sensors. Sensors 2020, 20, 6650. https://doi.org/10.3390/s20226650

AMA Style

Zéninari V, Vallon R, Bizet L, Jacquemin C, Aoust G, Maisons G, Carras M, Parvitte B. Widely-Tunable Quantum Cascade-Based Sources for the Development of Optical Gas Sensors. Sensors. 2020; 20(22):6650. https://doi.org/10.3390/s20226650

Chicago/Turabian Style

Zéninari, Virginie, Raphaël Vallon, Laurent Bizet, Clément Jacquemin, Guillaume Aoust, Grégory Maisons, Mathieu Carras, and Bertrand Parvitte. 2020. "Widely-Tunable Quantum Cascade-Based Sources for the Development of Optical Gas Sensors" Sensors 20, no. 22: 6650. https://doi.org/10.3390/s20226650

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop