Prof. Wlodzimierz Nakwaski Profile

Prof. Wlodzimierz Nakwaski

Director at Lodz Univ of Technology

SPIE Involvement:

Author

Publications (34)

Proceedings Article | 17 March 2023 Presentation

Threshold optimization of pulse operating quantum cascade vertical cavity emitting lasers (QC VCSELs)

Mikolaj Janczak, Robert Sarzala, Maciej Dems, Andrzej Kolek, Maciej Bugajski, Wlodzimierz Nakwaski, Tomasz Czyszanowski

Proceedings Volume PC12439, PC1243909 (2023) https://doi.org/10.1117/12.2651158

KEYWORDS: Vertical cavity surface emitting lasers, Quantum cascade lasers, Pulsed laser operation, Laser damage threshold, Quantum wells, Polarization, Numerical simulations, Mirrors, Doping

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Proceedings Article | 9 March 2022 Presentation

Configuration optimisation of quantum-cascade vertical-cavity surface-emitting lasers

Mikolaj Janczak, Robert Sarzała, Włodzimierz Nakwaski, Tomasz Czyszanowski

Proceedings Volume PC12021, PC120210J (2022) https://doi.org/10.1117/12.2608855

KEYWORDS: Vertical cavity surface emitting lasers, 3D modeling, Quantum cascade lasers, Mirrors, Laser damage threshold, Structural design, Quantum wells, Phase shift keying, Numerical analysis, Modulation

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Proceedings Article | 13 March 2019 Presentation

Quantum-cascade vertical-cavity surface-emitting laser (Conference Presentation)

Tomasz Czyszanowski, Sandra Grzempa, Wlodzimierz Nakwaski

Proceedings Volume 10939, 109391R (2019) https://doi.org/10.1117/12.2510503

KEYWORDS: Vertical cavity surface emitting lasers, 3D modeling, Infrared detectors, Infrared radiation, Light sources, Gases, Free space optical communications, Laser applications, Laser damage threshold, Modulation

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Proceedings Article | 4 March 2019 Presentation

Designing principles of quantum-cascade vertical-cavity surface-emitting lasers (Conference Presentation)

Sandra Grzempa, Wlodzimierz Nakwaski, Tomasz Czyszanowski

Proceedings Volume 10938, 109380O (2019) https://doi.org/10.1117/12.2509393

KEYWORDS: Vertical cavity surface emitting lasers, Laser development, Quantum cascade lasers, Laser damage threshold, Photons, Modulation, Phase shift keying, Infrared radiation, Structural design, Numerical analysis

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Proceedings Article | 4 December 2018 Paper

New structure of semiconductor lasers: quantum-cascade vertical-cavity surface-emitting laser (QC VCSEL)

Włodzimierz Nakwaski, Sandra Grzempa, Maciej Dems, Tomasz Czyszanowski

Proceedings Volume 10974, 109740A (2018) https://doi.org/10.1117/12.2519617

KEYWORDS: Vertical cavity surface emitting lasers, Semiconductor lasers, Quantum cascade lasers, Mirrors, Manufacturing, Quantum wells, Polarization, Semiconductors, Photons, Laser vision correction

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Proceedings Article | 19 February 2018 Paper

Quantum-cascade vertical-cavity surface-emitting laser integrated with monolithic high-contrast grating

Tomasz Czyszanowski, Sandra Grzempa, Maciej Dems, Włodzimierz Nakwaski

Proceedings Volume 10552, 1055208 (2018) https://doi.org/10.1117/12.2292031

KEYWORDS: Vertical cavity surface emitting lasers, Quantum cascade lasers, Diffraction gratings, Gallium arsenide

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Proceedings Article | 20 February 2017 Paper

Monolithic reflector for infrared radiation

Tomasz Czyszanowski, Sandra Grzempa, Maciej Dems, Włodzimierz Nakwaski

Proceedings Volume 10123, 101231P (2017) https://doi.org/10.1117/12.2268031

KEYWORDS: Infrared radiation, Reflectors, Semiconductor lasers, Current controlled current source, Semiconductors, Reflectivity, Distributed Bragg reflectors, Long wavelength infrared

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Proceedings Article | 22 December 2016 Paper

Impact of structure mounting of nitride laser bars on the emitted optical power

Robert Sarzała, Patrycja Śpiewak, Michał Wasiak, Włodzimierz Nakwaski, Szymon Stańczyk, Piotr Perlin

Proceedings Volume 10175, 101750W (2016) https://doi.org/10.1117/12.2261681

KEYWORDS: Semiconductor lasers, Copper, Mirrors, Gold, Gallium, Diamond, Optical mounts, Reflectivity, Thermal modeling, Data modeling

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Proceedings Article | 8 December 2016 Paper

Designing of TJ VCSEL based on nitride materials

R. Sarzała, K. Pijanowski, M. Gębski, M. Marciniak, W. Nakwaski

Proceedings Volume 10159, 1015908 (2016) https://doi.org/10.1117/12.2263444

KEYWORDS: Vertical cavity surface emitting lasers, Dielectrics, Mirrors, Resonators, Gallium nitride, 3D modeling, Reflectivity, Gold, Refractive index, Laser development

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Proceedings Article | 27 April 2010 Paper

Pulse-regime single-mode operation of antiwaveguide photonic-crystal 1300-nm VCSEL

Tomasz Czyszanowski, Robert Sarzala, Maciej Dems, Michal Wasiak, Wlodzimierz Nakwaski, Krassimir Panajotov

Proceedings Volume 7720, 77200A (2010) https://doi.org/10.1117/12.854067

KEYWORDS: Vertical cavity surface emitting lasers, 3D modeling, Quantum wells, Refractive index, Reflectivity, Pulsed laser operation, Systems modeling, Semiconductor lasers, Photonic crystals, Diffusion

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Proceedings Article | 8 May 2008 Paper

Unusual transverse-mode selectivity in some detuned VCSELs

Robert Sarzala, Maciej Kuc, Krzysztof Gutowski, Wlodzimierz Nakwaski

Proceedings Volume 6997, 699714 (2008) https://doi.org/10.1117/12.780880

KEYWORDS: Vertical cavity surface emitting lasers, 3D modeling, Active optics, Quantum wells, Instrument modeling, Refractive index, Surgery, Thermal modeling, Electrons

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Proceedings Article | 1 February 2007 Paper

Physics of an operation of vertical cavity surface emitting lasers with oxide apertures

Robert Sarzala, Włodzimierz Nakwaski

Proceedings Volume 6599, 659909 (2007) https://doi.org/10.1117/12.726647

KEYWORDS: Vertical cavity surface emitting lasers, Oxides, 3D modeling, Active optics, Resonators, Gallium arsenide, Atomic force microscopy, Continuous wave operation, Physics, Semiconductor lasers

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Proceedings Article | 12 October 2005 Paper

Methods to enhance mode selectivity of higher-output vertical-cavity surface-emitting diode lasers

Robert Sarzała, Włodzimierz Nakwaski

Proceedings Volume 5958, 59580D (2005) https://doi.org/10.1117/12.619444

KEYWORDS: Vertical cavity surface emitting lasers, Oxides, Resonators, Quantum wells, Gallium arsenide, Semiconductor lasers, Photonic crystals, Active optics, 3D modeling, Thermal modeling

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Proceedings Article | 22 October 2003 Paper

Single-photon devices in quantum cryptography

Wlodzimierz Nakwaski, Robert Sarzala, M. Wasiak, T. Czyszanowski, Pawel Mackowiak

Proceedings Volume 5136, (2003) https://doi.org/10.1117/12.519752

KEYWORDS: Photons, Electrons, Quantum cryptography, Single photon, Quantum dots, Quantum wells, Resonators, Quantum communications, Information security, Quantum information

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Proceedings Article | 22 October 2003 Paper

Simulation of threshold operation of GaInNAs diode lasers

Robert Sarzala, Pawel Mackowiak, M. Wasiak, T. Czyszanowski, Wlodzimierz Nakwaski

Proceedings Volume 5136, (2003) https://doi.org/10.1117/12.519754

KEYWORDS: Vertical cavity surface emitting lasers, 3D modeling, Semiconductor lasers, Continuous wave operation, Optical simulations, Gallium arsenide, Absorption, Laser damage threshold, Resistance, Mirrors

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Proceedings Article | 22 October 2003 Paper

Design of possible structures of nitride vertical-cavity surface-emitting lasers

Pawel Mackowiak, T. Czyszanowski, Robert Sarzala, M. Wasiak, Wlodzimierz Nakwaski

Proceedings Volume 5136, (2003) https://doi.org/10.1117/12.519746

KEYWORDS: Vertical cavity surface emitting lasers, Gallium nitride, Continuous wave operation, Quantum wells, 3D modeling, Active optics, Absorption, Thermal modeling, Resonators

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Proceedings Article | 6 October 2003 Paper

How to reach a single-fundamental-mode operation in nitride VCSELs

Wlodzimierz Nakwaski, Pawel Mackowiak

Proceedings Volume 5230, (2003) https://doi.org/10.1117/12.531922

KEYWORDS: Vertical cavity surface emitting lasers, Resonators, Continuous wave operation, Laser resonators, Active optics, Laser applications, Refractive index, Mirrors, Gallium nitride

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Proceedings Article | 4 October 2000 Paper

Nitride VCSELs: close future or distant prospects?

Wlodzimierz Nakwaski, Pawel Mackowiak

Proceedings Volume 4237, (2000) https://doi.org/10.1117/12.402861

KEYWORDS: Vertical cavity surface emitting lasers, Semiconductor lasers, Gallium nitride, Manufacturing, Mirrors, Neodymium, Laser applications, Reflectivity, Dielectric mirrors, Resonators

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Proceedings Article | 12 November 1999 Paper

Simple theory of steam oxidation of AlAs

Marek Osinski, Tengiz Svimonishvili, Gennady Smolyakov, Vladimir Smagley, Pawel Mackowiak, Wlodzimierz Nakwaski

Proceedings Volume 3896, (1999) https://doi.org/10.1117/12.370359

KEYWORDS: Oxides, Process control, Process modeling, Vertical cavity surface emitting lasers, Particles, Diffusion, Interfaces, Electronic components, Thermal modeling, Oxidation

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Proceedings Article | 6 August 1999 Paper

Design of InGaN/GaN/AlGaN VCSELs using the effective frequency method

Gennady Smolyakov, Vladimir Smagley, Wlodzimierz Nakwaski, Petr Eliseev, Marek Osinski

Proceedings Volume 3625, (1999) https://doi.org/10.1117/12.356891

KEYWORDS: Vertical cavity surface emitting lasers, Gallium nitride, Refractive index, Quantum wells, Absorption, Active optics, Structural design, Mirrors, Laser resonators, Metals

Proceedings Article | 6 August 1999 Paper

Multidisciplinary design tools for VCSEL devices and compact electronic packages

Enchao Yu, Maciej Pindera, Andrzej Przekwas, Gennady Smolyakov, Wlodzimierz Nakwaski, Marek Osinski

Proceedings Volume 3625, (1999) https://doi.org/10.1117/12.356897

KEYWORDS: Vertical cavity surface emitting lasers, Computer aided design, Instrument modeling, Thermography, Interfaces, Systems modeling, Physics, Photonics, Packaging, Thermal modeling

Proceedings Article | 7 July 1998 Paper

Thermal crosstalk in arrays of proton-implanted top-surface-emitting lasers

Enchao Yu, Marek Osinski, Wlodzimierz Nakwaski, Marek Turowski, Andrzej Przekwas

Proceedings Volume 3283, (1998) https://doi.org/10.1117/12.316672

KEYWORDS: Vertical cavity surface emitting lasers, Instrument modeling, Thermal modeling, Electro optical modeling, 3D modeling, Packaging, Pulsed laser operation, Computer aided design, Solid modeling, Laser damage threshold

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Proceedings Article | 22 May 1998 Paper

Prospects for nitride vertical-cavity surface-emitting lasers

Pawel Mackowiak, Wlodzimierz Nakwaski

Proceedings Volume 3490, (1998) https://doi.org/10.1117/12.308955

KEYWORDS: Vertical cavity surface emitting lasers, Mirrors, Gallium nitride, Resonators, Reflectivity, Laser damage threshold, Manufacturing, Cladding, Diffraction, Scattering

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Proceedings Article | 1 January 1998 Paper

High-order transverse modes in vertical-cavity surface-emitting lasers

Wlodzimierz Nakwaski, Robert Sarzala

Proceedings Volume 3320, (1998) https://doi.org/10.1117/12.301360

KEYWORDS: Vertical cavity surface emitting lasers, Gallium arsenide, 3D modeling, Resonators, Refraction, Quantum wells, Aluminum, Refractive index, Dielectrics, Thermal modeling

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Proceedings Article | 14 August 1997 Paper

Self-consistent analytical models of semiconductor vertical-cavity surface-emitting lasers

Wlodzimierz Nakwaski

Proceedings Volume 3186, (1997) https://doi.org/10.1117/12.280513

KEYWORDS: Vertical cavity surface emitting lasers, Semiconductor lasers, Semiconductors, Optical simulations

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Proceedings Article | 19 June 1995 Paper

Optimization of 1.3-um etched-well surface-emitting laser design

Marek Osinski, Wlodzimierz Nakwaski

Proceedings Volume 2399, (1995) https://doi.org/10.1117/12.212514

KEYWORDS: Mirrors, Vertical cavity surface emitting lasers, Dielectric mirrors, Continuous wave operation, Reflectivity, Resistance, Scattering, Doping, Rubidium, Thermal modeling

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Proceedings Article | 19 June 1995 Paper

Effects of carrier diffusion on thermal properties of proton-implanted top-surface-emitting lasers

Robert Sarzala, Wlodzimierz Nakwaski, Marek Osinski

Proceedings Volume 2399, (1995) https://doi.org/10.1117/12.212532

KEYWORDS: Diffusion, Resistance, Mirrors, Chemical elements, Vertical cavity surface emitting lasers, Absorption, 3D modeling, Finite element methods, Thermal modeling, Temperature metrology

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Proceedings Article | 30 June 1994 Paper

Analysis of current spreading and series resistance in GaAs/AlGaAs proton-implanted top-surface-emitting lasers

Marek Osinski, Wlodzimierz Nakwaski, Petros Varangis

Proceedings Volume 2146, (1994) https://doi.org/10.1117/12.178528

KEYWORDS: Resistance, Mirrors, Gallium arsenide, Resistors, Laser applications, Interfaces, Aluminum, Physics, Tellurium, Differential equations

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Proceedings Article | 30 June 1994 Paper

Self-consistent thermal-electrical modeling of proton-implanted top-surface emitting semiconductor lasers

Wlodzimierz Nakwaski, Marek Osinski

Proceedings Volume 2146, (1994) https://doi.org/10.1117/12.178527

KEYWORDS: Resistance, Thermal modeling, Vertical cavity surface emitting lasers, Absorption, Mirrors, Semiconductor lasers, External quantum efficiency, Reflectors, Instrument modeling

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Proceedings Article | 2 June 1994 Paper

Effective thermal conductivity analysis of vertical-cavity top-surface-emitting lasers with semiconducting Bragg mirrors

Marek Osinski, Wlodzimierz Nakwaski, Antonio Leal

Proceedings Volume 2147, (1994) https://doi.org/10.1117/12.177204

KEYWORDS: Resistance, Vertical cavity surface emitting lasers, Thermal effects, Mirrors, Thermal modeling, Semiconductor lasers, Semiconductors, Continuous wave operation, Reflectivity, Reflectors

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Proceedings Article | 16 February 1993 Paper

Effect of top-contact geometry on spreading resistance in proton-implanted vertical-cavity surface-emitting lasers

Marek Osinski, Wlodzimierz Nakwaski, Julian Cheng

Proceedings Volume 1788, (1993) https://doi.org/10.1117/12.141102

KEYWORDS: Resistance, Vertical cavity surface emitting lasers, Sensors, Reflectors, Mirrors, Image segmentation, Information technology, Light emitting diodes, Platinum, Solids

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Proceedings Article | 16 February 1993 Paper

Self-consistent calculation of temperature profiles in proton-implanted top-surface-emitting diode lasers

Wlodzimierz Nakwaski, Marek Osinski

Proceedings Volume 1788, (1993) https://doi.org/10.1117/12.141100

KEYWORDS: Resistance, Vertical cavity surface emitting lasers, Thermal modeling, Semiconductor lasers, Sensors, Instrument modeling, Absorption, Continuous wave operation, Mirrors

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Proceedings Article | 1 December 1992 Paper

Improved thermal properties of etched-well surface-emitting lasers with highly-doped P-cladding

Wlodzimierz Nakwaski

Proceedings Volume 1582, (1992) https://doi.org/10.1117/12.2321814

KEYWORDS: Doping, Cladding, Vertical cavity surface emitting lasers, Optoelectronics, Semiconductor lasers, Thermal modeling, Waveguides, Thermal effects, Solids, Continuous wave operation

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Proceedings Article | 26 June 1992 Paper

Thermal properties of etched-well surface-emitting diode lasers and two-dimensional arrays

Marek Osinski, Wlodzimierz Nakwaski

Proceedings Volume 1634, (1992) https://doi.org/10.1117/12.59124

KEYWORDS: Vertical cavity surface emitting lasers, Cladding, Semiconductor lasers, Doping, Resistance, Technologies and applications, Solids, Thermal modeling, Dielectric mirrors

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