• A. Janaszek, P. Wróbel, M. Dems, O. Ceylan, Y. Gurbuz, Ł. Kubiszyn, J. Piotrowski, R. Kotyński, Rigorous optical modelling of long-wavelength infrared photodetector with 2D subwavelength hole array in gold film, Opto-Electron. Rev. 32(1), e148831, 2024
  • E. Pruszyńska-Karbownik, D. Jandura, M. Dems, Ł. Zinkiewicz, A. Broda, M. Gębski, J. Muszalski, D. Pudis, J. Suffczyński, T. Czyszanowski, Concept of inverted refractive-index-contrast grating mirror and exemplary fabrication by 3D laser micro-printing, Nanophotonics 12(18), 3579–3588, 2023
  • M. Janczak, R. Sarzała, M. Dems, A. Kolek, M. Bugajski, W. Nakwaski, T. Czyszanowski, Threshold performance of pulse-operating quantum-cascade vertical-cavity surface-emitting lasers, Opt. Express 30(25), 45054, 2022
  • M. Drong, M. Dems, J. Perina, T. Fordos, H.-Y. Jaffres, K. Postava, H.-J. Drouhin, Time-Dependent Laser Cavity Perturbation Theory: Exploring Future Nano-Structured Photonic Devices in Semi-Analytic way, J. Lightwave Technol. 40(14), 4735-4745, 2022
  • M. Dems, Convergence analysis of various factorization rules in the Fourier-Bessel basis for solving Maxwell equations using modal methods, Opt. Express 29(3), 4378, 2021
  • P. Komar, M. Gębski, T. Czyszanowski, M. Dems, M. Wasiak, Planar focusing reflectors based on monolithic high contrast gratings: design procedure and comparison with parabolic mirrors, Opt. Express 28(26), 38745, 2020
  • L. Frasunkiewicz, K. Panajotov, H. Thienpont, M. Dems, T. Czyszanowski, Transverse Mode Mixing in a Coupled-Cavity VCSEL, J. Lightwave Technol. 38(20), 5774-5782, 2020
  • T. Czyszanowski, A. Sokół, M. Dems, M. Wasiak, Transparent electrode employing deep–subwavelength monolithic high-contrast grating integrated with metal, Opt. Express 28(19), 28383, 2020
  • M. Marciniak, A. Broda, M. Gębski, M. Dems, J. Muszalski, A. Czerwiński, J. Ratajczak, Ł. Marona, W. Nakwaski, J. A. Lott, T. Czyszanowski, Tuning of reflection spectrum of a monolithic high-contrast grating by variation of its spatial dimensions, Opt. Express 28(14), 20967, 2020
  • M. Więckowska, R. Sarzała, R. Ledzion, M. Dems, Impact of an Antiresonant Oxide Island on the Lasing of Lateral Modes in VCSELs, Materials 13(9), 2195, 2020
  • M. Kuc, Ł. Piskorski, M. Dems, M. Wasiak, A. Sokół, R. Sarzała, T. Czyszanowski, Numerical Investigation of the Impact of ITO, AlInN, Plasmonic GaN and Top Gold Metalization on Semipolar Green EELs, Materials 13(6), 1444, 2020
  • M. Kuc, A. Sokół, Ł. Piskorski, M. Dems, M. Wasiak, R. Sarzała, T. Czyszanowski, ITO layer as an optical confinement for nitride edge-emitting lasers, B. Pol. Acad. Sci-tech. 68, 147-154, 2020
  • R. Sarzała, Ł. Piskorski, T. Czyszanowski, M. Dems, Influence of Various Bottom DBR Designs on the Thermal Properties of Blue Semiconductor-Metal Subwavelength-Grating VCSELs, Materials 12(19), 3235, 2019
  • M. Więckowska, M. Dems, T. Czyszanowski, Comparison of methods for simulation of the optical properties of VCSEls, str. Vol 1219 No 38 (2017): Scientific Bulletin. Physics, Kwiecień 2019
  • K. Pierściński, M. Bugajski, T. Czyszanowski, A. Kolek, M. Wesołowski, M. Kuc, R. Sarzała, M. Dems, M. Płuska, D. Pierścińska, W. Strupiński, A. Czerwiński, Coupled-cavity AlInAs/InGaAs/InP quantum cascade lasers fabricated by focused ion beam processing, JPhys Photonics 1(1), 015001, 2018
  • M. Marciniak, Ł. Piskorski, M. Gębski, M. Dems, M. Wasiak, K. Panajotov, J. A. Lott, T. Czyszanowski, The Vertical-Cavity Surface-Emitting Laser as a Sensing Device, J. Lightwave Technol. 36(16), 3185-3192, 2018
  • M. Więckowska, T. Czyszanowski, G. Almuneau, M. Dems, Shaping vertical-cavity surface-emitting laser mode profiles with an antiresonant oxide island for improved single-mode emission, J. Opt. Soc. Am. B 35(9), 2259, 2018
  • M. Dems, Monolithic High-Contrast Gratings: Why Do They Not Scatter Light?, J. Lightwave Technol. 35(2), 159-165, 2017
  • T. Czyszanowski, M. Gębski, M. Dems, M. Wasiak, R. Sarzała, K. Panajotov, Subwavelength grating as both emission mirror and electrical contact for VCSELs in any material system, Sci. Rep. 7(1), 40348, 2017
  • M. Dems, P. Wnuk, P. Wasylczyk, Ł. Zinkiewicz, A. Wójcik-Jedlińska, K. Regiński, K. Hejduk, A. Jasik, Optimization of broadband semiconductor chirped mirrors with genetic algorithm, Appl. Phys. B: Lasers Opt. 122(10), 266, 2016
  • M. Marciniak, M. Gębski, A. Sokół, T. Wojtatowicz, M. Dems, R. Sarzała, T. Czyszanowski, Monolityczna siatka HCG jako zwierciadło w azotkowym laserze VCSEL, Elektronika : konstrukcje, technologie, zastosowania 2016(9), 35-38, 2016
  • M. Marciniak, M. Gębski, M. Dems, E. Haglund, A. Larsson, M. Riaziat, J. A. Lott, T. Czyszanowski, Optimal parameters of monolithic high-contrast grating mirrors, Opt. Lett. 41(15), 3495, 2016
  • M. Gębski, M. Dems, M. Wasiak, J. A. Lott, T. Czyszanowski, Monolithic Subwavelength High-Index-Contrast Grating VCSEL, IEEE Photon. Technol. Lett. 27(18), 1953-1956, 2015
  • M. Gębski, M. Dems, A. Szerling, M. Motyka, Ł. Marona, R. Kruszka, D. Urbańczyk, M. Walczakowski, N. Pałka, A. Wójcik-Jedlińska, Q. J. Wang, D. H. Zhang, M. Bugajski, M. Wasiak, T. Czyszanowski, Monolithic high-index contrast grating: a material independent high-reflectance VCSEL mirror, Opt. Express 23(9), 11674, 2015
  • T. Czyszanowski, E. Kapon, N. Volet, J. Walczak, M. Dems, R. Sarzała, V. Iakovlev, A. Sirbu, A. Mereuta, A. Caliman, Numerical Analysis of Mode Discrimination by Intracavity Patterning in Long-Wavelength Wafer-Fused Vertical-Cavity Surface-Emitting Lasers, IEEE J. Quantum. Electron. 50(9), 1-9, 2014
  • M. Gębski, O. Kuzior, M. Dems, M. Wasiak, Y. Xie, Z. J. Xu, Q. J. Wang, D. H. Zhang, T. Czyszanowski, Transverse mode control in high-contrast grating VCSELs, Opt. Express 22(17), 20954, 2014
  • P. Wnuk, P. Wasylczyk, Ł. Zinkiewicz, M. Dems, K. Hejduk, K. Regiński, A. Wójcik-Jedlińska, A. Jasik, Continuously tunable Yb:KYW femtosecond oscillator based on a tunable highly dispersive semiconductor mirror, Opt. Express 22(15), 18284, 2014
  • J. . Chen, W. Fan, Q. J. Wang, M. Gębski, M. Dems, T. Czyszanowski, D. H. Zhang, OPTICAL GAIN AND ENERGY BAND STRUCTURE OF PHOTONIC CRYSTAL VCSELs WITH HIGH-INDEX-CONTRAST SUBWAVELENGTH GRATINGS, str. 1440014, Czerwiec 2014
  • M. Gębski, M. Dems, J. . Chen, Q. J. Wang, D. H. Zhang, T. Czyszanowski, Optical Properties of GaAs/AlO<formula formulatype="inline"><tex Notation="TeX">x</tex></formula> and Si/SiO <formula formulatype="inline"><tex Notation="TeX">x</tex></formula> High Contrast Gratings Designed for 980-nm VCSELs, IEEE T. Nanotechnol. 13(3), 418-424, 2014
  • T. Czyszanowski, N. Volet, J. Walczak, M. Dems, R. Sarzała, Intra-cavity patterning - new method of single mode emission enhancement, Photonics Letters of Poland 6(1), 26-28, 2014
  • K. Panajotov, M. Dems, C. Belmonte, H. Thienpont, Y. Xie, J. Beeckman, K. Neyts, Vertical-Cavity Surface-Emitting Laser With Cholesteric Liquid Crystal Overlay, J. Lightwave Technol. 32(1), 20-26, 2014
  • V. Iakovlev, J. Walczak, M. Gębski, A. Sokół, M. Wasiak, P. Gallo, A. Sirbu, R. Sarzała, M. Dems, T. Czyszanowski, E. Kapon, Double-diamond high-contrast-gratings vertical external cavity surface emitting laser, J. Phys. D: Appl. Phys. 47(6), 065104, 2014
  • A. Jasik, P. Wasylczyk, P. Wnuk, M. Dems, A. Wójcik-Jedlińska, K. Regiński, Ł. Zinkiewicz, K. Hejduk, Tunable Semiconductor Double-Chirped Mirror With High Negative Dispersion, IEEE Photon. Technol. Lett. 26(1), 14-17, 2014
  • J. . Chen, W. Fan, Q. J. Wang, M. Gębski, M. Dems, T. Czyszanowski, D. H. Zhang, Optical Gain and Energy Band Structure of Photonic Crystal VCSELs with High-Index-Contrast Subwavelength Gratings, Journal of Molecular and Engineering Materials 02(02), 1440014, 2014
  • K. Panajotov, M. Dems, C. Belmonte, H. Thienpont, Y. Xie, J. Beeckman, K. Neyts, Vertical-cavity surface-emitting laser with cholesteric liquid crystal overlay, J. Lightwave Technol. 32(1), 20-26, 2014
  • V. Iakovlev, J. Walczak, M. Gębski, A. Sokół, M. Wasiak, P. Gallo, A. Sirbu, R. Sarzała, M. Dems, T. Czyszanowski, E. Kapon, Double-diamond high-contrast-gratings vertical external cavity surface emitting laser, J. Phys. D: Appl. Phys. 47(6), 065104, 2014
  • M. Gębski, M. Dems, J. . Chen, Q. J. Wang, D. H. Zhang, T. Czyszanowski, The Influence of Imperfections and Absorption on the Performance of a GaAs/AlO _\rm x High-Contrast Grating for Monolithic Integration With 980 nm GaAs-Based VCSELs, J. Lightwave Technol. 31(23), 3853-3858, 2013
  • A. Jasik, M. Dems, P. Wnuk, P. Wasylczyk, A. Wójcik-Jedlińska, K. Regiński, Ł. Zinkiewicz, K. Hejduk, Design and fabrication of highly dispersive semiconductor double-chirped mirrors, Appl. Phys. B: Lasers Opt. 116(1), 141-146, 2013
  • K. Panajotov, Y. Xie, M. Dems, C. Belmonte, H. Thienpont, J. Beeckman, K. Neyts, Vertical-cavity surface-emitting laser emitting circularly polarized light, Laser Phys. Lett. 10(10), 105003, 2013
  • T. Czyszanowski, M. Dems, R. Sarzała, K. Panajotov, K. Choquette, Photonic Crystal VCSELs: Detailed Comparison of Experimental and Theoretical Spectral Characteristics, IEEE J. Sel. Topics in Quantum Electron. 19(5), 1-8, 2013
  • T. Czyszanowski, R. Sarzała, M. Dems, J. Walczak, M. Wasiak, W. Nakwaski, V. Iakovlev, N. Volet, E. Kapon, Spatial-Mode Discrimination in Guided and Antiguided Arrays of Long-Wavelength VCSELs, IEEE J. Sel. Topics in Quantum Electron. 19(5), 1-10, 2013
  • A. Jasik, P. Wasylczyk, M. Dems, P. Wnuk, A. Wójcik-Jedlińska, K. Regiński, Ł. Zinkiewicz, K. Hejduk, A passively mode-locked, self-starting femtosecond Yb:KYW laser with a single highly dispersive semiconductor double-chirped mirror for dispersion compensation, Laser Phys. Lett. 10(8), 085302, 2013
  • L. Frasunkiewicz, T. Czyszanowski, M. Wasiak, M. Dems, R. Sarzała, W. Nakwaski, K. Panajotov, Optimization of Single-Mode Photonic-Crystal Results in Limited Improvement of Emitted Power and Unexpected Broad Range of Tuning, J. Lightwave Technol. 31(9), 1360-1366, 2013
  • K. Gołaszewska-malec, R. Kruszka, M. Myśliwiec, W. Jung, T. Piotrowski, M. G. Juchniewicz, J. Bar, M. Wzorek, E. Kamińska, A. Piotrowska, R. Sarzała, M. Dems, J. Wojtas, R. Mędrzycki, P. Prystawko, Diody elektroluminescencyjne na bazie GaN z powierzchniowymi kryształami fotonicznymi, Elektronika : konstrukcje, technologie, zastosowania LIV(9), 46-49, 2013
  • T. Czyszanowski, R. Sarzała, M. Dems, J. Walczak, M. Wasiak, W. Nakwaski, V. Iakovlev, N. Volet, E. Kapon, Spatial-Mode Discrimination in Guided and Antiguided Arrays of Long-Wavelength VCSELs, IEEE J. Sel. Topics in Quantum Electron. 19(5), 2013
  • M. Gębski, M. Dems, J. . Chen, Q. J. Wang, D. H. Zhang, T. Czyszanowski, The Influence of Imperfections and Absorption on the Performance of a GaAs/AlOx High-Contrast Grating for Monolithic Integration With 980 nm GaAs-Based VCSELs, J. Lightwave Technol. 31(23), 3853-3858, 2013
  • A. Jasik, P. Wasylczyk, M. Dems, P. Wnuk, A. Wójcik-Jedlińska, K. Regiński, Ł. Zinkiewicz, K. Hejduk, A passively mode-locked, self-starting femtosecond Yb:KYW laser with a single highly dispersive semiconductor double-chirped mirror for dispersion compensation, Laser Phys. Lett. 10(8), 2013
  • K. Panajotov, Y. Xie, M. Dems, C. Belmonte, H. Thienpont, J. Beeckman, K. Neyts, Vertical-cavity surface-emitting laser emitting circularly polarized light, Laser Phys. Lett. 10(10), 2013
  • R. Sarzała, T. Czyszanowski, M. Wasiak, M. Dems, Ł. Piskorski, W. Nakwaski, K. Panajotov, Numerical Self-Consistent Analysis of VCSELs, Advances in Optical Technologies 2012, 1-17, 2012
  • T. Czyszanowski, M. Dems, R. Sarzała, W. Nakwaski, K. Panajotov, Precise Lateral Mode Control in Photonic Crystal Vertical-Cavity Surface-Emitting Lasers, IEEE J. Quantum. Electron. 47(10), 1291-1296, 2011
  • M. Dems, Modelling of high-contrast grating mirrors. The impact of imperfections on their performance in VCSELs, Opto-Electron. Rev. 19(3), 340-345, 2011
  • M. Dems, Propagacja fali elektromagnetycznej w falowodzie wykonanym w planarnym krysztale fotonicznym do zastosowań w diodzie o emisji krawędziowej, Elektronika : konstrukcje, technologie, zastosowania 9, 40-42, 2011
  • M. Dems, I.-S. Chung, P. Nyakas, S. Bischoff, K. Panajotov, Numerical Methods for modeling Photonic-Crystal VCSELs, Opt. Express 18(15), 16042, 2010
  • K. Panajotov, M. Dems, Photonic crystal vertical-cavity surface-emitting lasers with true photonic bandgap, Opt. Lett. 35(6), 829, 2010
  • T. Czyszanowski, R. Sarzała, M. Dems, H. Thienpont, W. Nakwaski, K. Panajotov, Strong modes discrimination and low threshold in cw regime of 1300 nm AlInGaAs/InP VCSEL induced by photonic crystal, Physica Status Solidi (A) Applications and Materials 206(7), 1396-1403, 2009
  • T. Czyszanowski, R. Sarzała, M. Dems, W. Nakwaski, H. Thienpont, K. Panajotov, Optimal photonic-crystal parameters assuring single-mode operation of 1300 nm AlInGaAs vertical-cavity surface-emitting laser, J. Appl. Phys. 105(9), 093102, 2009
  • M. Dems, Semivectorial method based on effective index for VCSEL analysis, J. Opt. Soc. Am. B 26(4), 792, 2009
  • M. Dems, Semi-Vectorial Method Based on Effective Index for VCSEL Analysis, J. Opt. Soc. Am. B 26, 792-796, 2009
  • T. Czyszanowski, R. Sarzała, M. Dems, W. Nakwaski, H. Thienpont, K. Panajotov, Optimal Photonic-Crystal Parameters Assuring Single-Mode Operation of 1300nm AlInGaAs Vertical-Cavity Surface-Emitting Laser, J. Appl. Phys. 105, 093102, 2009
  • T. Czyszanowski, R. Sarzała, M. Dems, H. Thienpont, W. Nakwaski, K. Panajotov, Strong Modes Discrimination and Low Threshold in Cw Regime of 1300nm AlInGaAs/InP VCSEL Induced by Photonic Crystal, Phys. Stat. Sol. (a) 206, 1396-1403, 2009
  • M. Dems, Semivectorial method based on effective index for VCSEL analysis, J. Opt. Soc. Am. B B/Vol. 26 No.4, 792–796, 2009
  • M. Dems, T. Czyszanowski, H. Thienpont, K. Panajotov, Highly birefringent and dichroic photonic crystal VCSEL design, Opt. Commun. 281(11), 3149-3152, 2008
  • T. Czyszanowski, R. Sarzała, M. Dems, H. Thienpont, K. Panajotov, Threshold characteristics of bottom-emitting long wavelength VCSELs with photonic-crystal within the top mirror, Opt. Quant. Electron. 40(2-4), 149-154, 2008
  • T. Czyszanowski, M. Dems, H. Thienpont, K. Panajotov, Modal gain and confinement factors in top- and bottom-emitting photonic-crystal VCSEL, J. Phys. D: Appl. Phys. 41(8), 085102, 2008
  • M. Dems, T. Czyszanowski, H. Thienpont, K. Panajotov, Highly Birefringent and Dichroic Photonic-Crystal VCSEL Design, Opt. Commun. 281, 3149-3152, 2008
  • T. Czyszanowski, R. Sarzała, Ł. Piskorski, M. Dems, M. Wasiak, W. Nakwaski, K. Panajotov, Comparison of Usability of Oxide Apertures and Photonic Crystals Used to Create Radial Optical Confinements in 650-nm GaInP VCSELs, IEEE J. Quantum. Electron. 43(11), 1041-1047, 2007
  • T. Czyszanowski, M. Dems, K. Panajotov, Optimal Parameters of Photonic-Crystal Vertical-Cavity Surface-Emitting Diode Lasers, J. Lightwave Technol. 25(9), 2331-2336, 2007
  • M. Dems, K. Panajotov, Modeling of single- and multimode photonic-crystal planar waveguides with the plane-wave admittance method, Appl. Phys. B: Lasers Opt. 89(1), 19-23, 2007
  • T. Czyszanowski, M. Dems, K. Panajotov, Impact of the hole depth on the modal behaviour of long wavelength photonic crystal VCSELs, J. Phys. D: Appl. Phys. 40(9), 2732-2735, 2007
  • R. Kotyński, M. Dems, K. Panajotov, Waveguiding losses of micro-structured fibres—plane wave method revisited, Opt. Quant. Electron. 39(4-6), 469, 2007
  • M. Dems, T. Czyszanowski, K. Panajotov, Numerical analysis of high Q-factor photonic-crystal VCSELs with plane-wave admittance method, Opt. Quant. Electron. 39(4-6), 419-426, 2007
  • T. Czyszanowski, M. Dems, H. Thienpont, K. Panajotov, Modal behavior of photonic-crystal vertical-cavity surface-emitting diode laser analyzed with Plane Wave Admittance Method, Opt. Quant. Electron. 39(4-6), 427-433, 2007
  • P. Bienstman, S. Selleri, L. Rosa, H. P. Uranus, W. C. L. Hopman, R. Costa, A. Melloni, L. C. Andreani, J. P. Hugonin, P. Lalanne, D. Pinto, S. S. A. Obayya, M. Dems, K. Panajotov, Modelling leaky photonic wires: A mode solver comparison, Opt. Quant. Electron. 38(9-11), 731-759, 2007
  • T. Czyszanowski, M. Dems, K. Panajotov, Single mode condition and modes discrimination in photonic-crystal 1.3 μm AlInGaAs/InP VCSEL, Opt. Express 15(9), 5604, 2007
  • T. Czyszanowski, M. Dems, H. Thienpont, K. Panajotov, Optimal radii of photonic crystal holes within DBR mirrors in long wavelength VCSEL, Opt. Express 15(3), 1301, 2007
  • T. Czyszanowski, M. Dems, K. Panajotov, Impact of the Hole Depth on the Modal Behaviour of Long Wavelength Photonic Crystal VCSELs, J. Phys. D: Appl. Phys. 40, 2732-2735, 2007
  • T. Czyszanowski, M. Dems, K. Panajotov, Single Mode Condition and Modes Discrimination in Photonic-Crystal 1.3 μm AlInGaAs/InP VCSEL, Opt. Express 15, 5604-5609, 2007
  • M. Dems, K. Panajotov, Modeling of Single- and Multimode Photonic-Crystal Planar waveguides with Plane-Wave Admittance Method, Appl. Phys. B: Lasers Opt. 89, 19-23, 2007
  • T. Czyszanowski, M. Dems, K. Panajotov, Optimal Parameters of Photonic-Crystal Vertical-Cavity Surface-Emitting Diode Lasers, J. Lightwave Technol. 25, 2331-2336, 2007
  • T. Czyszanowski, R. Sarzała, Ł. Piskorski, M. Dems, M. Wasiak, W. Nakwaski, K. Panajotov, Comparison of Usability of Oxide Apertures and Photonic Crystals Used To Create Radial Optical Confinements in 650-nm GaInP VCSELs, IEEE J. Quantum. Electron. 43, 1041-1047, 2007
  • T. Czyszanowski, M. Dems, K. Panajotov, Optimal parameters of photonic-crystal vertical-cavity surface-emitting diode lasers., J. Lightwave Technol. 25 No. 9, 2331-2335, 2007
  • M. Dems, W. Nakwaski, Modelling of High-Contrast Photonic Crystal Slabs Using the Novel Extension of the Effective Index Method, Opt. Appl. 36, 51-56, 2006
  • M. Dems, R. Kotyński, K. Panajotov, Plane Wave Admittance Method - a novel approach for determining the electromagnetic modes in photonic structures, Opt. Express 13(9), 3196, 2005
  • M. Dems, R. Kotyński, K. Panajotov, PlaneWave Admittance Method- a novel approach for determining the electromagnetic modes in photonic structures, Opt. Express 13, 3196-3207, 2005
  • M. Dems, W. Nakwaski, Thermal and molecular stresses in multi-layered structures of nitride devices, Semicond. Sci. Technol. 19(5), 667-667, 2004
  • M. Dems, W. Nakwaski, Thermal and molecular stresses in multi-layered structures of nitride devices, Semicond. Sci. Technol. 18(8), 733-737, 2003
  • M. Dems, W. Nakwaski, Thermal and Molecular Stresses in Multi-Layered Structures of Nitride Devices, Semicond. Sci. Technol. 18, 733-737, 2003