Mr. Krzysztof Chmielewski Profile

Krzysztof Chmielewski

at Łukasiewicz Research Network - IMiF

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Author

Publications (11)

Proceedings Article | 4 October 2022 Presentation

The experimental investigation of thermal properties of mid-IR quantum cascade lasers (Conference Presentation)

Dorota Pierscinska, Grzegorz Sobczak, Katarzyna Krajewska, Krzysztof Chmielewski, Aleksandr Kuzmicz, Piotr Gutowski

Proceedings Volume PC12202, PC1220208 (2022) https://doi.org/10.1117/12.2633775

KEYWORDS: Quantum cascade lasers, Gold, Mid-IR, Electro optics, Waveguides, Thermal modeling, Numerical modeling, Heterojunctions, Electro optical modeling, Cladding

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Proceedings Article | 4 October 2022 Presentation

Multi-section coupled cavity mid-IR quantum cascade lasers (Conference Presentation)

Kamil Pierscinski, Dorota Pierscinska, Aleksandr Kuzmicz, Grzegorz Sobczak, Piotr Gutowski, Krzysztof Chmielewski

Proceedings Volume PC12202, PC1220207 (2022) https://doi.org/10.1117/12.2633658

KEYWORDS: Quantum cascade lasers, Mid-IR, Wavelength tuning, Terahertz radiation, Laser stabilization, FT-IR spectroscopy, Yield improvement, Spectroscopy, Remote sensing, Reactive ion etching

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Proceedings Article | 13 March 2019 Presentation

Characterization and fabrication of monolithic two-section mid-IR quantum cascade lasers (Conference Presentation)

Kamil Pierscinski, Dorota Pierścińska, Aleksandr Kuźmicz, Krzysztof Chmielewski, Grzegorz Sobczak, Piotr Gutowski, Maciej Bugajski

Proceedings Volume 10939, 109391N (2019) https://doi.org/10.1117/12.2509537

KEYWORDS: Quantum cascade lasers, Mid-IR, Dry etching, Reactive ion etching, Heterojunctions, Ion beams, Etching, Mirrors, Scattering, Yield improvement

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Proceedings Article | 4 December 2018 Paper

Mid-infrared quantum cascade lasers

Maciej Bugajski, Dorota Pierścińska, Piotr Gutowski, Kamil Pierściński, Grzegorz Sobczak, Kamil Janus, Iwona Sankowska, Krzysztof Michalak, Krzysztof Chmielewski, Joanna Branas, Aleksander Kuźmicz

Proceedings Volume 10974, 1097409 (2018) https://doi.org/10.1117/12.2519567

KEYWORDS: Waveguides, Quantum cascade lasers, Gallium, Aluminum, Heterojunctions, Laser applications, Mid-IR, Laser development, Laser processing, Gallium arsenide

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Proceedings Article | 4 October 2017 Paper

Verification of the test stand for microbolometer camera in accredited laboratory

Michal Krupiński, Jaroslaw Bareła, Krzysztof Chmielewski, Mariusz Kastek

Proceedings Volume 10427, 104271G (2017) https://doi.org/10.1117/12.2277701

KEYWORDS: Sensors, Signal to noise ratio, Cameras, Microbolometers, Black bodies, Temperature metrology, Field programmable gate arrays, Signal detection

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Microbolometer belongs to the group of thermal detectors and consist of temperature sensitive resistor which is exposed to measured radiation flux. Bolometer array employs a pixel structure prepared in silicon technology. The detecting area is defined by a size of thin membrane, usually made of amorphous silicon (a-Si) or vanadium oxide (VOx). FPAs are made of a multitude of detector elements (for example 384 × 288 ), where each individual detector has different sensitivity and offset due to detector-to-detector spread in the FPA fabrication process, and additionally can change with sensor operating temperature, biasing voltage variation or temperature of the observed scene. The difference in sensitivity and offset among detectors (which is called non-uniformity) additionally with its high sensitivity, produces fixed pattern noise (FPN) on produced image. Fixed pattern noise degrades parameters of infrared cameras like sensitivity or NETD. Additionally it degrades image quality, radiometric accuracy and temperature resolution. In order to objectively compare the two infrared cameras ones must measure and compare their parameters on a laboratory test stand. One of the basic parameters for the evaluation of a designed camera is NETD. In order to examine the NETD, parameters such as sensitivity and pixels noise must be measured. To do so, ones should register the output signal from the camera in response to the radiation of black bodies at two different temperatures. The article presets an application and measuring stand for determining the parameters of microbolometers camera. Prepared measurements were compared with the result of the measurements in the Institute of Optoelectronics, MUT on a METS test stand by CI SYSTEM. This test stand consists of IR collimator, IR standard source, rotating wheel with test patterns, a computer with a video grabber card and specialized software. The parameters of thermals cameras were measure according to norms and method described in literature.

Proceedings Article | 11 July 2017 Paper

LIBS, Raman spectroscopy, and optical microscopy analyses of superficial encrustations on ancient tesserae in Lebanon

Anna Tomkowska, Krzysztof Chmielewski, Wojciech Skrzyczanowski, Monika Mularczyk-Oliwa, Roman Ostrowski, Marek Strzelec

Proceedings Volume 10331, 103310J (2017) https://doi.org/10.1117/12.2270001

KEYWORDS: FT-IR spectroscopy, Statistical analysis, Laser induced breakdown spectroscopy, Raman spectroscopy, Analytical research, Optical microscopy, Microscopy, Nd:YAG lasers, Optical analysis, Microscopes, Factor analysis

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Proceedings Article | 21 October 2016 Paper

Test stand for determining parameters of microbolometer camera

Michał Krupiński, Jarosław Bareła, Mariusz Kastek, Krzysztof Chmielewski

Proceedings Volume 9987, 998712 (2016) https://doi.org/10.1117/12.2241073

KEYWORDS: Sensors, Microbolometers, Cameras, Nonuniformity corrections, Image processing, Infrared cameras, Black bodies, Field programmable gate arrays, Signal detection, Image compression

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Proceedings Article | 11 July 2009 Paper

Conservation of wooden art works and laser cleaning

A. Koss, M. Lubryczynska, J. Czernichowska, I. Uchman-Laskowska, K. Chmielewski, M. Mazur, A. Markowska, J. Marczak, M. Strzelec

Proceedings Volume 7391, 73910S (2009) https://doi.org/10.1117/12.827516

KEYWORDS: Gold, Photography, Thin film coatings, Chemical analysis, Silver, Nd:YAG lasers, Laser safety, Curtains, Optical fibers, X-rays

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Proceedings Article | 16 October 2008 Paper

Method of detection, classification, and identification of objects employing acoustic signal analysis

Tomasz Orzanowski, Henryk Madura, Tomasz Sosnowski, Krzysztof Chmielewski

Proceedings Volume 7112, 71120U (2008) https://doi.org/10.1117/12.800153

KEYWORDS: Acoustics, Signal detection, Land mines, Signal analysis, Signal analyzers, Sensors, Reconnaissance systems, Classification systems, Signal generators, Mining

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Proceedings Article | 1 March 1995 Paper

Microprocessor energy meter of laser radiation

Zbigniew Bielecki, Krzysztof Chmielewski, Miroslaw Nowakowski, Andrzej Zajac

Proceedings Volume 2202, (1995) https://doi.org/10.1117/12.203309

KEYWORDS: Sensors, Laser energy, Signal detection, Pyroelectric detectors, Laser resonators, Control systems, Ceramics, Resistance, Signal processing, Interference (communication)

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Proceedings Article | 1 March 1995 Paper

Ophthalmological LH-58 set with the holmium laser

Andrzej Zajac, Zdzislaw Jankiewicz, Krzysztof Chmielewski, Miroslaw Nowakowski, Wieslaw Pichola, D. Podniesinski, Marek Skorczakowski, Tadeusz Kecik, Dariusz Kecik, Jan Kasprzak

Proceedings Volume 2203, (1995) https://doi.org/10.1117/12.203347

KEYWORDS: Holmium, Fiber lasers, Optical fibers, Control systems, Eye, Cornea, Laser safety, Switches, Cooling systems, Semiconductor lasers

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Showing 5 of 11 publications

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