Dr. Nataliya Berberova Profile

Dr. Nataliya Berberova

PhD Student at Institute of Optical Materials and Technologies

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Author

Publications (13)

Proceedings Article | 15 August 2023 Poster + Paper

Intensity-based dynamic speckle method for analysis of variable-rate dynamic events

Elena Stoykova, Lian Nedelchev, Blaga Blagoeva, Branimir Ivanov, Mikhail Levchenko, Nataliya Berberova-Buhova, Dimana Nazarova

Proceedings Volume 12618, 1261829 (2023) https://doi.org/10.1117/12.2673462

KEYWORDS: Image segmentation, Speckle, Speckle pattern, Spatial light modulators, Polymers, Phase distribution, Light sources and illumination, Optical sensors, Computer simulations, Complex amplitude

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Proceedings Article | 20 June 2021 Poster + Presentation + Paper

Recognition of small areas of activity by the pointwise intensity-based dynamic speckle analysis

E. Stoykova, N. Berberova, B. Blagoeva, D. Nazarova, L. Nedelchev, A. Machikhin

Proceedings Volume 11782, 117821U (2021) https://doi.org/10.1117/12.2592600

KEYWORDS: Speckle, Speckle pattern, Speckle analysis, Temporal resolution, Wave propagation, Visualization, Sensors, Reliability, Refractive index, Polymers

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Proceedings Article | 29 January 2019 Paper

Optical response of azopolymer (PAZO) layers doped with TiO2 nanoparticles

Nataliya Berberova, Peter Sharlandjiev, Dimana Nazarova, Lian Nedelchev

Proceedings Volume 11047, 110470F (2019) https://doi.org/10.1117/12.2516751

KEYWORDS: Particles, Scattering, Light scattering, Optical spheres, Refractive index, Nanoparticles, Composites, Dielectric polarization, Birefringence, Holography

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Proceedings Article | 26 June 2017 Paper

Pointwise intensity-based dynamic speckle analysis with binary patterns

Elena Stoykova, Georgy Mateev, Dimana Nazarova, Nataliya Berberova, Branimir Ivanov

Proceedings Volume 10329, 103293Y (2017) https://doi.org/10.1117/12.2270153

KEYWORDS: Speckle, Speckle pattern, Correlation function, Binary data, Statistical analysis, Speckle analysis, Optical metrology, Data acquisition, Probability theory, Nondestructive evaluation, Reflectivity, Image processing

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Proceedings Article | 5 January 2017 Paper

Laser induced optically and thermally reversible birefringence in azopolymers

D. Nazarova, L. Nedelchev, D. Ivanov, B. Blagoeva, N. Berberova, E. Stoykova, G. Mateev, D. Kostadinova

Proceedings Volume 10226, 1022608 (2017) https://doi.org/10.1117/12.2262357

KEYWORDS: Birefringence, Polymers, Polarization, Thermography, Laser optics, Anisotropy, Chromophores, Thin films, Holographic materials, Holography

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Proceedings Article | 5 January 2017 Paper

Dynamic laser speckle metrology with binarization of speckle patterns

Elena Stoykova, Dimana Nazarova, Nataliya Berberova, Atanas Gotchev, Branimir Ivanov, Georgy Mateev

Proceedings Volume 10226, 102260R (2017) https://doi.org/10.1117/12.2262330

KEYWORDS: Speckle pattern, Speckle, Correlation function, Binary data, Algorithm development, Statistical analysis, Speckle analysis, Laser metrology, Speckle metrology, Nondestructive evaluation

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Proceedings Article | 5 January 2017 Paper

Three-dimensional imaging of cultural heritage artifacts with holographic printers

Hoonjong Kang, Elena Stoykova, Nataliya Berberova, Jiyong Park, Dimana Nazarova, Joo Sup Park, Youngmin Kim, Sunghee Hong, Branimir Ivanov, Nikola Malinowski

Proceedings Volume 10226, 102261I (2017) https://doi.org/10.1117/12.2262068

KEYWORDS: Holography, Holograms, Printing, Digital holography, Wavefronts, 3D printing, Computer generated holography, Spatial light modulators, 3D image processing, Stereo holograms

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Proceedings Article | 5 January 2017 Paper

Time dependent spectral birefringence excited with laser light in azopolymers and azopolymers doped with ZnO

L. Nedelchev, D. Nazarova, B. Blagoeva, D. Ivanov, D. Daskalova, N. Berberova, G. Mateev, D. Kostadinova

Proceedings Volume 10226, 1022606 (2017) https://doi.org/10.1117/12.2262608

KEYWORDS: Birefringence, Zinc oxide, Absorbance, Nanoparticles, Nanocomposites, Polarization, Polarizers, Transmittance, Thin films, Spectroscopy

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Proceedings Article | 8 January 2015 Paper

Birefringence induced in azopolymer (PAZO) films with different thickness

Lian Nedelchev, Dimana Nazarova, Georgi Mateev, Nataliya Berberova

Proceedings Volume 9447, 94471I (2015) https://doi.org/10.1117/12.2176158

KEYWORDS: Birefringence, Polymers, Absorbance, Laser beam diagnostics, Thin films, Sodium, Polarimetry, Anisotropy, Polarization, Absorption

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Proceedings Article | 8 January 2015 Paper

Dynamic laser speckle measurement with enhanced visualization of activity map

Elena Stoykova, Nataliya Berberova, Tania Nikova

Proceedings Volume 9447, 94471H (2015) https://doi.org/10.1117/12.2176147

KEYWORDS: Speckle, Speckle pattern, Visualization, Statistical analysis, Astatine, Correlation function, Fourier transforms, Gaussian filters, Optical sensors, Reflectivity

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Proceedings Article | 22 August 2014 Paper

SLM-based optical simulator for dynamic speckle analysis

Nataliya Berberova, Elena Stoykova, Branimir Ivanov

Proceedings Volume 9286, 928654 (2014) https://doi.org/10.1117/12.2063631

KEYWORDS: Speckle pattern, Spatial light modulators, Speckle, Optical simulations, CCD cameras, Statistical analysis, Correlation function, Speckle analysis, Computer simulations, Fourier transforms

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Proceedings Article | 15 March 2013 Paper

Speckle suppression in pattern projection profilometry with a thin sinusoidal phase grating by polychromatic illumination

Nataliya Berberova, Elena Stoykova, Joo Sup Park, Hoonjong Kang, Ventseslav Sainov

Proceedings Volume 8770, 87700R (2013) https://doi.org/10.1117/12.2013644

KEYWORDS: Speckle, Visibility, Diffraction gratings, Fringe analysis, Modulation, Holography, CCD cameras, Near field diffraction, Light sources, Paraxial approximations

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Proceedings Article | 15 March 2013 Paper

Influence of the size of nanoparticles doped in series of azopolymers on the photoinduced birefringence

Dimana Nazarova, Lian Nedelchev, Violeta Dragostinova, Nataliya Berberova

Proceedings Volume 8770, 877009 (2013) https://doi.org/10.1117/12.2013646

KEYWORDS: Birefringence, Nanoparticles, Neptunium, Zinc oxide, Polymers, Nanocomposites, Doping, Absorbance, Polarimetry, Scattering

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Showing 5 of 13 publications

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