Browsing by Author "Chin, Sanghoon"
Now showing items 1-7 of 7
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Compact, UAV compatible 2D Spectrometer for multi-species atmospheric gas analysis
Gouman, Julien; Renevey, Philippe; Dasen, Stephan; Chin, Sanghoon; Herr, Tobias; Buchs, Gilles; Lütolf, Fabian; Lecomte, Steve; Vergara, German; Martin, Hans; Moselund, Peter Morten; Harren, Frans J. M.; Balet, Laurent (2019-06-23)We present an UAV compatible spectrometer designed for sampling air pollutants in remote locations. Relying on a custom-made Multi-Pass Cell and a 3-5 µm broadband supercontinuum light source, it takes advantage of an ... -
Demonstration of mid-IR gas sensing with frequency-swept Fabry-Perot cavity quantum cascade laser
Chin, Sanghoon; Mitev, Valentin; Giraud, Eliane; Maulini, Richard; Hempel, Frank; Lang, Norbert; Wiese, Mathias; Zimmermann, Henrik; Boiko, Dmitri L. (2022-09-16)We demonstrate an innovative approach for a mid-IR gas sensing spectroscopy with a cost-effective commercial Fabry-Perot cavity quantum cascade laser. Using transient blue-chirped emission of such a laser, the spectral ... -
Digital electronics platform-based supercontinuum light detection for mid-infrared trace gas sensing
Chin, Sanghoon; Denis, Séverine; Van Zaen, Jérôme; Muntané, Enric; Khodabakhsh, Amir; Harren, Frans J. M.; Bowen, Patrick; Schröder, Stephan; Martin, Hans; Lecomte, Steve; Balet, Laurent (2022-05-15)We present a digital platform-based lock-in detection scheme to improve the gas sensing performance of a spectrometer. A numerically-controlled oscillator serves as reference clock to trigger the supercontinuum source and ... -
Digital OPLL-based distributed Brillouin sensing system in optical fibers
Chin, Sanghoon; Denis, Séverine; Kundermann, Stefan; Brasch, Victor; Lecomte, Steve (2022-05-23)A digital optical phase-locked loop (OPLL) has been implemented to develop a distributed Brillouin sensing system in optical fibers. In our experiment, two commercial semiconductor lasers are phase-locked to each other ... -
Electrically driven frequency blue-chirped emission in Fabry–Perot cavity quantum cascade laser at room temperature
Chin, Sanghoon; Mitev, Valentin; Giraud, Eliane; Maulini, Richard; Blaser, Stéphane; Boiko, Dmitri L. (2021-01) -
Frequency blue chirp in Fabry-Perot cavity QCL
Chin, Sanghoon; Mitev, Valentin; Boiko, Dmitri L. (2020) -
Utilization of a frequency-swept Fabry-Perot cavity quantum cascade laser for an innovative mid-IR spectrometer
Chin, Sanghoon; Mitev, Valentin; Giraud, Eliane; Maulini, Richard; Hempel, Frank; Lang, Norbert; Wiese, Mathias; Zimmermann, Henrik; Boiko, Dmitri L. (2022-05-07)We present an innovative approach for a mid-IR spectrometer comprising a commercial Fabry-Perot cavity quantum cascade laser. Utilization of the transient blue-chirped emission of such a laser the spectral fingerprint of ...