Mr. Michal Trojanowski Profile

Michal Trojanowski

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Publications (9)

Proceedings Article | 26 August 2015 Paper

Optical Coherence Tomography for nanoparticles quantitative characterization

Michał Trojanowski, Maciej Kraszewski, Marcin Strąkowski, Jerzy Pluciński

Proceedings Volume 9554, 95540I (2015) https://doi.org/10.1117/12.2188063

KEYWORDS: Nanoparticles, Optical coherence tomography, Nanocomposites, Spectroscopy, Statistical analysis, Particles, Polymers, Polymethylmethacrylate, Analytical research, Scattering

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Proceedings Article | 21 June 2015 Paper

Simulating the coherent light propagation in a random scattering materials using the perturbation expansion

Maciej Kraszewski, Michal Trojanowski, Marcin Strąkowski, Jerzy Pluciński

Proceedings Volume 9526, 95260M (2015) https://doi.org/10.1117/12.2184870

KEYWORDS: Light scattering, Monte Carlo methods, Scattering, Particles, Laser scattering, Optical coherence tomography, Electroluminescent displays, Computer simulations, Speckle pattern, Light wave propagation

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Multiple scattering of a coherent light plays important role in the optical metrology. Probably the most important phenomenon caused by multiple scattering are the speckle patterns present in every optical imaging method based on coherent or partially coherent light illumination. In many cases the speckle patterns are considered as an undesired noise. However, they were found useful in various subsurface imaging methods such as laser speckle imaging (LSI) or optical coherence tomography (OCT). All features of the speckle patterns and their connection with microstructure of scattering materials was not fully exploited. Further research on this topic may lead to a simple and inexpensive optical diagnostic methods. Theoretical and numerical research could greatly facilitate development of such methods. However, this requires simulations of coherent light propagation through a random scattering media of a length larger than few hundreds of a light wavelength. During such propagation the light can be scattered by many tens of thousands of scattering particles. The numerical methods, such as the radiative transfer theory and the Monte Carlo methods, allows to simulate propagation of the incoherent light in such a media but they do not consider the coherence properties of light. Moreover, they consider only average realization of the scattering medium and therefore does not allow to predict properties of any random fluctuations of the scattered light, such as a speckle patterns. Direct solvers of Maxwell or Helmholtz equations, such as finite-difference or finite-element methods could solve this problem but their computational complexity limits their application to media no longer than about 10 to 20 wavelengths of the light. Here we show an alternative approach based on solving the integral form of the Helmholtz equation written as a so called perturbation expansion. We show the numerical algorithm for solving this equation. The presented algorithm allows to simulate light scattering with accuracy similar to the finite difference methods but with much lower computational complexity. This can make it an useful tool in research on coherent light propagating through the random media.

Proceedings Article | 10 March 2015 Paper

Efficient signal processing in spectroscopic optical coherence tomography

Maciej Kraszewski, Michał Trojanowski, Marcin Strąkowski

Proceedings Volume 9333, 93330V (2015) https://doi.org/10.1117/12.2079763

KEYWORDS: Optical coherence tomography, Spectroscopy, Visualization, Fourier transforms, RGB color model, Imaging spectroscopy, Signal processing, Optical spectroscopy, Time-frequency analysis, Convolution

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Proceedings Article | 10 March 2015 Paper

Advanced Monte Carlo simulator of the polarization-sensitive optical coherence tomography systems

Maciej Kraszewski, Michal Trojanowski, Jerzy Pluciński, Marcin Strąkowski

Proceedings Volume 9333, 933314 (2015) https://doi.org/10.1117/12.2079739

KEYWORDS: Monte Carlo methods, Optical coherence tomography, Optical simulations, Light scattering, Photon transport, Systems modeling, Scattering, Polarization, Laser scattering, Gaussian beams

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Proceedings Article | 2 March 2015 Paper

Nano-particle doped hydroxyapatite material evaluation using spectroscopic polarization sensitive optical coherence tomography

Paulina Strąkowska, Michał Trojanowski, Mateusz Gardas, Maciej Głowacki, Maciej Kraszewski, Marcin Strąkowski

Proceedings Volume 9312, 93122X (2015) https://doi.org/10.1117/12.2080281

KEYWORDS: Optical coherence tomography, Nanoparticles, Silver, Spectroscopy, Sol-gels, Polarization, Analytical research, Nanocomposites, Particles, Optical spectroscopy

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Proceedings Article | 2 March 2015 Paper

Polarization sensitive spectroscopic optical coherence tomography for multimodal imaging

Marcin Strąkowski, Maciej Kraszewski, Paulina Strąkowska, Michał Trojanowski

Proceedings Volume 9312, 93123X (2015) https://doi.org/10.1117/12.2079570

KEYWORDS: Optical coherence tomography, Polarization, Spectroscopy, Signal processing, Imaging spectroscopy, Birefringence, Time-frequency analysis, RGB color model, Light sources, Spectroscopes

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Proceedings Article | 15 May 2014 Paper

Parallel multithread computing for spectroscopic analysis in optical coherence tomography

Michal Trojanowski, Maciej Kraszewski, Marcin Strakowski, Jerzy Pluciński

Proceedings Volume 9139, 91390E (2014) https://doi.org/10.1117/12.2052148

KEYWORDS: Optical coherence tomography, Fourier transforms, Signal processing, Spectroscopy, Algorithm development, Optical spectroscopy, Parallel computing, Interferometry, Analytical research, Scattering

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Proceedings Article | 1 May 2014 Paper

Novel approach to modeling spectral-domain optical coherence tomography with Monte Carlo method

Maciej Kraszewski, Michal Trojanowski, Marcin Strakowski, Jerzy Pluciński, Bogdan Kosmowski

Proceedings Volume 9131, 91310U (2014) https://doi.org/10.1117/12.2052359

KEYWORDS: Monte Carlo methods, Optical coherence tomography, Photons, Systems modeling, Scattering, Particles, Light scattering, Laser scattering, Optical simulations, Polarization

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Proceedings Article | 1 May 2014 Paper

Time-frequency analysis in optical coherence tomography for technical objects examination

Marcin Strąkowski, Maciej Kraszewski, Michał Trojanowski, Jerzy Pluciński

Proceedings Volume 9132, 91320N (2014) https://doi.org/10.1117/12.2052142

KEYWORDS: Optical coherence tomography, Time-frequency analysis, Polarization, Light scattering, Spectroscopes, Thin films, Scattering, Signal processing, Spectroscopy, Composites

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Showing 5 of 9 publications

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