Mr. Piotr Bojes Profile

Piotr Bojes

at Wroclaw Univ of Science and Technology

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Publications (4)

Proceedings Article | 3 October 2022 Presentation

Methane and acetylene detection in an antiresonant hollow-core fiber using quartz-enhanced photothermal spectroscopy technique

Piotr Bojes, Piotr Pokryszka, Piotr Jaworski, Yufei Ma, Pawel Koziol, Grzegorz Dudzik, Fei Yu, Dakun Wu, Karol Krzempek

Proceedings Volume PC12229, PC1222901 (2022) https://doi.org/10.1117/12.2632712

KEYWORDS: Spectroscopy, Methane, Sensors, Signal analysis, Quartz, Optical amplifiers, Modulation, Gas sensors, Fiber amplifiers

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Quartz Enhanced Photothermal Spectroscopy (QEPTS) is a technique, which enables developing gas sensors characterized by a broadband operational range and superb sensitivity. QEPTS relies on the thermoelastic effect induced by the illumination of the Quartz Tunning Fork (QTF) with a modulated laser radiation, which generates a piezoelectric signal. QTF excitation can occur at any wavelength, which is impossible to observe in e.g. semiconductor detectors. The sub-dollar cost of a QTF delivers simultaneously broadband and sensitive detection capability and significantly reduced costs of the sensor. Furthermore, as in majority of laser-based sensors, the sensitivity of QEPTS-based systems can be easily enhanced by increasing laser-gas interaction path length. This is typically realized by using multipass cells (MPCs), which significantly increase the sensor’s complexity and decrease its robustness. Instead of using MPCs, an Antiresonant Hollow-Core Fiber (ARHCF), designed for light transmission in more than one spectral band can be used as a long gas absorption cell, leading to the increase in the sensor’s performance while keeping its design simple. Here, we present a sensor utilizing a combination of an ARHCF-based absorption cell and the QEPTS. In the developed system the gas-filled ARHCF substitutes an MPC. The spectroscopic signal analysis relies on the use of a simple QTF with a resonance frequency of 32.744 kHz connected with a self-made, low-noise amplifier and an addition of a wavelength modulation spectroscopy – based signal retrieval scheme for sensor’s performance enhancement. The sensor enables simultaneous detection of acetylene and methane at parts-per-million by volume level sensitivity, targeting their absorption lines in the near- and mid-infrared. The results confirm excellent suitability of the ARHCF-aided QEPTS sensors for being employed as a versatile gas detectors. This research was funded by Narodowe Centrum Nauki (NCN), grant number UMO-2018/30/Q/ST3/00809.

Proceedings Article | 26 September 2022 Poster

Mid-IR antiresonant hollow-core fiber assisted molecular dispersion spectroscopy of ethane with parts-per-trillion by volume sensitivity

Piotr Jaworski, Karol Krzempek, Piotr Bojes, Dakun Wu, Fei Yu

Proceedings Volume PC12229, PC1222907 (2022) https://doi.org/10.1117/12.2632034

KEYWORDS: Mid-IR, Sensors, Molecular spectroscopy, Spectroscopy, Gas sensors, Absorption, Laser spectroscopy, Sensor performance, Molecules, Molecular lasers

Proceedings Article | 30 March 2022 Poster

Wavelength modulation spectroscopy of ethane at sub parts-per-billion-by-volume level using a 30-meters long mid-IR antiresonant hollow-core fiber

Piotr Jaworski, Karol Krzempek, Pawel Koziol, Piotr Bojęś, Grzegorz Dudzik, Dakun Wu, Fei Yu, Meisong Liao, Krzysztof Abramski

Proceedings Volume PC12139, PC121390N (2022) https://doi.org/10.1117/12.2619978

KEYWORDS: Spectroscopy, Modulation, Mid-IR, Sensors, Optical gas detection, Molecules, Laser spectroscopy, Gases, Gas sensors, Gas lasers

Proceedings Article | 10 October 2021 Poster

Simulations of pressure-driven gas flow in a nodeless antiresonant hollow-core fiber for laser absorption spectroscopy applications

Piotr Bojęś, Piotr Jaworski, Karol Krzempek, Ziemowit Malecha, Paweł Kozioł, Grzegorz Dudzik, Fei Yu, Meisong Liao, Dakun Wu, Krzysztof Abramski

Proceedings Volume 11901, 1190119 (2021) https://doi.org/10.1117/12.2602660

KEYWORDS: Sensors, Modeling, Capillaries, Structured optical fibers, Fiber lasers, Laser spectroscopy, Absorption spectroscopy, 3D modeling, Optical simulations, Laser applications

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