Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Michal Nikodem"'
Autor:
Michal Nikodem
Publikováno v:
Materials, Vol 13, Iss 18, p 3983 (2020)
Thanks to the guidance of an optical wave in air, hollow-core fibers may serve as sampling cells in an optical spectroscopic system. This paper reviews applications of hollow-core optical fibers to laser-based gas sensing. Three types of hollow-core
Externí odkaz:
https://doaj.org/article/523dcd3115f74523aef7dee6f518ffd9
Autor:
Genevieve Plant, Michal Nikodem, Phil Mulhall, Ruth K. Varner, David Sonnenfroh, Gerard Wysocki
Publikováno v:
Sensors, Vol 15, Iss 9, Pp 21315-21326 (2015)
Existing technologies for quantifying methane emissions are often limited to single point sensors, making large area environmental observations challenging. We demonstrate the operation of a remote, multi-path system using Chirped Laser Dispersion Sp
Externí odkaz:
https://doaj.org/article/1692ac9274294ca48ba8f531368106e8
Publikováno v:
Sensors, Vol 19, Iss 15, p 3352 (2019)
In this paper, we demonstrate the laser-based gas sensing of methane near 3.3 µm inside hollow-core photonic crystal fibers. We exploit a novel anti-resonant Kagome-type hollow-core fiber with a large core diameter (more than 100 µm) which results
Externí odkaz:
https://doaj.org/article/bb5061fbec89455c9451bb683a4f6035
Autor:
Gerard Wysocki, Michal Nikodem
Publikováno v:
Sensors, Vol 12, Iss 12, Pp 16466-16481 (2012)
In this paper we present a prototype instrument for remote open-path detection of nitrous oxide. The sensor is based on a 4.53 μm quantum cascade laser and uses the chirped laser dispersion spectroscopy (CLaDS) technique for molecular concentration
Externí odkaz:
https://doaj.org/article/97aacc23cb054ebbb1e993e92be49cb8
Publikováno v:
Journal of Lightwave Technology. :1-7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac7e7bece1b567fce2dc26407c702064
https://doi.org/10.1109/jlt.2023.3272308
https://doi.org/10.1109/jlt.2023.3272308
Autor:
Przemyslaw ChmielowskI, Michal Nikodem
Publikováno v:
Optics express. 30(23)
In this paper, we experimentally demonstrate a continuous-wave widely wavelength-tunable fiber laser based on erbium- and bismuth-doped fibers in parallel configuration. A diffraction grating was used for wavelength tuning, and the tuning range of 26
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ebddf90abb0a01097695f568965f54b
https://pubmed.ncbi.nlm.nih.gov/36366686
https://pubmed.ncbi.nlm.nih.gov/36366686
Autor:
Grzegorz Gomółka, Michal Majewski, Magdalena Zatorska, Aleksandr M. Khegai, Sergey V. Alyshev, Aleksey S. Lobanov, Sergei V. Firstov, Michal Nikodem
Publikováno v:
Conference on Lasers and Electro-Optics.
We present a tunable, continuous-wave fiber laser with a tuning range of 187 nm (1617-1804 nm) and an fiber amplifier with an output power of more than 200 mW, both based on bismuth-doped germanosilicate fiber.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43b9d2b4fcedee904c608e97376545f1
https://doi.org/10.1364/cleo_si.2022.sm5l.1
https://doi.org/10.1364/cleo_si.2022.sm5l.1
Publikováno v:
Optics Continuum. 2:266
In this paper we present a quartz-enhanced photoacoustic spectroscopy (QEPAS) of methane near 1651 nm. QEPAS is a high-sensitivity gas sensing method that relies on detecting acoustic waves generated by gas molecules. The sensor setup consists of a b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de2094d7c630e8024772efb24170ab09
https://doi.org/10.1364/optcon.477782
https://doi.org/10.1364/optcon.477782
Autor:
Grzegorz Gomółka, Grzegorz Stępniewski, Dariusz Pysz, Ryszard Buczyński, Mariusz Klimczak, Michal Nikodem
Publikováno v:
Optics Express. 31:3685
For over a decade hollow-core fibers have been used in optical gas sensors in the role of gas cells. However, very few examples of actual real-life applications of those sensors have been demonstrated so far. In this paper, we present a highly-sensit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d17a71f099a6ed1363935c739ccbd77
https://doi.org/10.1364/oe.479963
https://doi.org/10.1364/oe.479963
Autor:
A. S. Lobanov, Michal Nikodem, Sergei V. Firstov, Monika Krajewska, Dariusz Pysz, Sergey Alyshev, Grzegorz Gomółka, Grzegorz Stepniewski, Aleksandr Khegai, Mariusz Klimczak, Ryszard Buczynski
Publikováno v:
Applied optics. 60(15)
We present laser-based methane detection near 1651 nm inside an antiresonant hollow-core fiber (HCF) using photothermal spectroscopy (PTS). A bismuth-doped fiber amplifier capable of delivering up to more than 160 mW at 1651 nm is used to boost the P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba3b71ef45dafa459414af081de157d8
https://pubmed.ncbi.nlm.nih.gov/34143110
https://pubmed.ncbi.nlm.nih.gov/34143110