Dr. Tomas Martan Profile

Dr. Tomas Martan

Postdoctoral Fellow at Institute of Photonics and Electronics CAS

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Author

Publications (14)

Proceedings Article | 27 April 2016 Paper

Suspended-core silica and lead-silicate fibers for nonlinear application and sensing purposes

Matej Komanec, Tomas Nemecek, Redwan Ahmad, Tomas Martan, Dmytro Suslov, Stanislav Zvanovec

Proceedings Volume 9886, 98861C (2016) https://doi.org/10.1117/12.2227105

KEYWORDS: Supercontinuum generation, Glasses, Optical fibers, Nonlinear optics, Sensors, Liquids, Refractometry, Photonic crystal fibers, Signal attenuation, Bridges, Capillaries, Analytical research

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SPIE Journal Paper | 8 April 2015

Multimode fiber tapers for reproducible refractometric liquid detection

Matej Komanec, Tomas Martan, Tomas Nemecek, Stanislav Zvanovec

OE, Vol. 54, Issue 04, 047102, (April 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.4.047102

KEYWORDS: Multimode fibers, Liquids, Sensors, Polymers, Silica, Optical fibers, Refractive index, Tapered optical fibers, Optical engineering, Polymeric sensors

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Proceedings Article | 11 October 2011 Paper

Preparation and characterization of bottle optical microresonators with circular and hexagonal cross-sections

Filip Todorov, Jiří Čtyroký, Vlastimil Matějec, Miroslav Chomát, Daniela Berková, Ivan Kašík, Tomáš Martan, Václav Kubeček, Michal Jelínek, Martin Fibrich

Proceedings Volume 8306, 83060Q (2011) https://doi.org/10.1117/12.911986

KEYWORDS: Microresonators, Resonators, Optical fibers, Silica, Waveguides, Carbon dioxide lasers, Neck, Polarization, Refractive index, Fiber lasers

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Proceedings Article | 11 October 2011 Paper

Preparation of spherical optical microresonators and their resonance spectra in air and gaseous acetone

Vlastimil Matějec, Filip Todorov, Michal Jelínek, Martin Fibrich, Miroslav Chomát, Vaclav Kubeček, Ivo Barton, Tomas Martan, Daniela Berková

Proceedings Volume 8306, 830605 (2011) https://doi.org/10.1117/12.910786

KEYWORDS: Microresonators, Silica, Spherical lenses, Liquids, Resonators, Optical fibers, Glasses, Temperature metrology, Sensors, Scattering

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Proceedings Article | 11 October 2011 Paper

Silicon micro sensors as integrated readout platform for colorimetric and fluorescence based opto-chemical transducers

Matthias Will, Tomas Martan, Olaf Brodersen

Proceedings Volume 8306, 83060B (2011) https://doi.org/10.1117/12.912798

KEYWORDS: Sensors, Luminescence, Transducers, Light emitting diodes, Silicon, Polymers, Oxygen, Semiconducting wafers, Carbon dioxide, Chemical analysis

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Opto-chemical transducer almost offers unlimited possibilities for detection of physical quantities. New technologies and research show a steady increasing of publications in the area of sensoric principles. For transfer to real world applications the optical response has to be converted into an electrical signal. An exceptional opto chemical transducer loses the attraction if complex and expensive instruments for analysis are requires. Therefore, the readout system must be very compact and producible for low cost. In this presentation, the technology platform as a solution for these problems will be presented. We combine micro structuring of silicon, photodiode fabrication, chip in chip mounting and novel assembly technologies for creation of a flexible sensor platform. This flexible combination of technologies allows fabricating a family of planar optical remission sensors. With variation of design and modifications, we are able to detect colorimetric, fluorescent properties of an sensitive layer attached on the sensor surface. In our sensor with typical size of 6mm x 6mm x 1mm different emitting sources based on LED's or laser diodes, multiple detection cannels for the remitted light and also measurement of temperature are included. Based on these sensors we proof the concept by demonstrating sensors for oxygen, carbon dioxide and ammonia based on colorimetric and fluorescent changes in the transducer layer. In both configurations, LED's irradiated the sensitive polymer layer through a transparent substrate. The absorption or fluorescence properties of dyed polymer are changed by the chemical reaction and light response is detected by PIN diodes. The signal shift is analyzed by using a computer controlled evaluation board of own construction. Accuracy and reliability of the remission sensor system were verified and the whole sensor system was experimentally tested in the range of concentrations from 50 ppm up to 100 000 ppm for CO2 and O2 Furthermore, we develop concepts to use the sensor also for interferometric detection of layer properties and the combination with capacitive structures on the surface. This allows detecting of thickness or refractive index variation of layers in future.

Proceedings Article | 11 May 2011 Paper

Axial intensity distribution of converging spherical wave behind an elliptic aperture

M. Miler, T. Martan

Proceedings Volume 8074, 807411 (2011) https://doi.org/10.1117/12.888251

KEYWORDS: Diffraction, Spherical lenses, Holography, Semiconductor lasers, Collimation, Destructive interference, Glasses, Beam analyzers, Optical components, Lithium

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Proceedings Article | 9 May 2011 Paper

Dependence of detected intensity of fluorescence of dye on optical fiber tapered tip diameter

M. Pospisilova, J. Aubrecht, T. Martan, J. Mrazek, I. Kasik, V. Matejec

Proceedings Volume 8073, 80731C (2011) https://doi.org/10.1117/12.886349

KEYWORDS: Luminescence, Optical fibers, Sensors, Fluorescence spectroscopy, Transducers, Signal attenuation, Fiber lasers, Photonics, Electronics, Liquids

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Proceedings Article | 9 May 2011 Paper

Microstructure optical fibres for detection of gaseous analytes

T. Martan, J. Aubrecht, O. Podrazký, I. Kašík, V. Matějec, J. Kaňka

Proceedings Volume 8073, 80731O (2011) https://doi.org/10.1117/12.886957

KEYWORDS: Cladding, Optical fibers, Nitrogen, Structured optical fibers, Waveguides, Silica, Signal attenuation, Refractive index, Liquids, Capillaries

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Proceedings Article | 7 May 2011 Paper

Preparation and characterization of sensing layers for pH detection in living plant cells

J. Mrazek, I. Kasik, J. Nekola, T. Martan, O. Podrazky, M. Pospisilova, V. Matejec

Proceedings Volume 8073, 807318 (2011) https://doi.org/10.1117/12.886250

KEYWORDS: Luminescence, Absorption, Transducers, Sensors, Matrices, Calibration, Biological and chemical sensing, Fluorescence spectroscopy, Spatial resolution, Data processing

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Proceedings Article | 18 May 2009 Paper

Local real-time detection of pH using fibre tapers

Ivan Kasik, Tomas Martan, Ondrej Podrazky, Jan Mrazek, Marie Pospisilova, Vlastimil Matejec

Proceedings Volume 7356, 73561U (2009) https://doi.org/10.1117/12.820674

KEYWORDS: Transducers, Luminescence, Silica, Polymers, Fluorescence spectroscopy, Fiber coatings, Carbon dioxide lasers, Laser cutting, In vitro testing, Ocean optics

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Proceedings Article | 18 November 2008 Paper

Optical sensor based on sensitive polymer layer

Matthias Will, Tomas Martan, Ralf Müller, Olaf Brodersen, Gerhard Mohr

Proceedings Volume 7138, 71380A (2008) https://doi.org/10.1117/12.817974

KEYWORDS: Polymers, Sensors, Light emitting diodes, Polymeric sensors, Optical sensors, Diodes, Transducers, PIN photodiodes, Carbon dioxide, Polymer thin films

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Proceedings Article | 18 November 2008 Paper

Tapered optical fibres for sensing

Tomas Martan, Jiri Kanka, Ivan Kasik, Vlastimil Matejec

Proceedings Volume 7138, 71380Z (2008) https://doi.org/10.1117/12.818000

KEYWORDS: Optical fibers, Structured optical fibers, Scanning electron microscopy, Tapered optical fibers, Optical sensing, Cladding, Finite-difference time-domain method, Biological and chemical sensing, Sensors, Micro optical fluidics

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Proceedings Article | 16 May 2007 Paper

Optical principle of pH measurement for detection of auxin flow through cellular membrane

Ondrej Podrazky, Jan Mrazek, Miroslav Seidl, Ivan Kasik, Petr Tobiska, Vlastimil Matejec, Tomas Martan, Jan Aubrecht

Proceedings Volume 6585, 65850Y (2007) https://doi.org/10.1117/12.722924

KEYWORDS: Transducers, Luminescence, Absorption, Spatial resolution, Fiber optics, Fluorescence spectroscopy, Absorbance, Spectroscopy, Calibration, Fiber optics tests

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Proceedings Article | 12 April 2007 Paper

Workplace for manufacturing devices based on optical fiber tapers

Tomáš Martan, Pavel Honzátko, Jiři Kaňka, Karel Novotný

Proceedings Volume 6609, 66090K (2007) https://doi.org/10.1117/12.739499

KEYWORDS: Optical fibers, Single mode fibers, Optics manufacturing, Manufacturing, Fiber couplers, Cladding, Fiber characterization, Microscopes, Photography, Electronics engineering

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Showing 5 of 14 publications

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