Professor/Head of Department
School of Mathematical Sciences
University College Cork
Western Gateway Building G49
Cork
Ireland

T: +353 (21) 420 5828
E: sebastian.wieczorek@ucc.ie
W: http://euclid.ucc.ie/pages/staff/Sebastian/

Sebastian M. Wieczorek received his MSc degree in Theoretical Physics from Adam Mickiewicz University in Poznan, Poland, in June 1998, and his PhD degree in Mathematical Physiscs  from the Free University Amsterdam, The Netherlands, in April 2002. Following his PhD, he worked as a Postdoctoral Researcher at Sandia National Laboratories in Albuquerque New Mexico USA. He was then appointed Lecturer in Mathematics at the University of Exeter UK in June 2006, promoted to Senior Lecturer in May 2010, and to Associate Professor in February 2014.  In August 2014, I took the  position of Professor (Chair) of Applied Mathematics and Head of Department of Applied Mathematics at University College Cork in Ireland.


http://euclid.ucc.ie/pages/staff/Sebastian/cv.html

Research Interests

Dynamical Systems and Applied Bifurcation Theory.
Nonlinear Laser Dynamics.
Tipping Points.

Book Chapters

YearPublication
(2012)'Noise synchronisation and stochastic bifurcations in lasers'
S. Wieczorek (2012) 'Noise synchronisation and stochastic bifurcations in lasers' In: Dr. Kathy Lüdge (eds). Nonlinear Laser Dynamics: From Quantum Dots to Cryptography. Weinheim: Willey. Globe icon [DOI] [Details]
(2007)'Global Bifurcation Analysis in Laser Systems'
S. Wieczorek (2007) 'Global Bifurcation Analysis in Laser Systems' In: Dr. Bernd Krauskopf, Dr. Hinke M. Osinga, Dr. Jorge Galán-Vioque (eds). Numerical Continuation Methods for Dynamical Systems. Bristol: Springer. Globe icon [DOI] [Details]

Peer Reviewed Journals

YearPublication
(2014)'Mode structure of a semiconductor laser with feedback from two external filters'
P. Slowinnski, B. Krauskopf and S. Wieczorek, (2014) 'Mode structure of a semiconductor laser with feedback from two external filters'. Discrete and Continuous Dynamical Systems-Series B, [Details]
(2014)'From synchronisation to persistent optical turbulence in laser arrays'
N. Blackbeard, S. Wieczorek, H. Erzgraber, P.S. Dutta (2014) 'From synchronisation to persistent optical turbulence in laser arrays'. Physica D, 286-287 :43-58 Globe icon [DOI] [Details]
(2014)'Adapting to a changing environment: non-obvious thresholds in multi-scale systems'
Perryman, Clare,Wieczorek, Sebastian (2014) 'Adapting to a changing environment: non-obvious thresholds in multi-scale systems'. Proceedings Of The Royal Society A-Mathematical Physical And Engineering Sciences, 470 (21702170):40226-40226 Globe icon [DOI] [Details]
(2013)'Is the astronomical forcing a reliable and unique pacemaker for climate? A conceptual model study'
De Saedeleer, Bernard,Crucifix, Michel,Wieczorek, Sebastian (2013) 'Is the astronomical forcing a reliable and unique pacemaker for climate? A conceptual model study'. Climate Dynamicsclimate Dynamics, 40 (1-21-2):273-294 Globe icon [DOI] [Details]
(2012)'Tipping points in open systems: bifurcation, noise-induced and rate-dependent examples in the climate system'
Ashwin, Peter,Wieczorek, Sebastian,Vitolo, Renato,Cox, Peter (2012) 'Tipping points in open systems: bifurcation, noise-induced and rate-dependent examples in the climate system'. Philosophical Transactions of the Royal Society a-Mathematical Physical and Engineering Sciences, 370 (19621962):1166-1184 Globe icon [DOI] [Details]
(2011)'Shear-Induced Bifurcations and Chaos in Models of Three Coupled Lasers'
Blackbeard, Nicholas,Erzgraeber, Hartmut,Wieczorek, Sebastian (2011) 'Shear-Induced Bifurcations and Chaos in Models of Three Coupled Lasers'. Siam Journal On Applied Dynamical Systemssiam Journal On Applied Dynamical Systems, 10 (22):469-509 Globe icon [DOI] [Details]
(2011)'Excitability in ramped systems: the compost-bomb instability'
Wieczorek, S.,Ashwin, P.,Luke, C. M.,Cox, P. M. (2011) 'Excitability in ramped systems: the compost-bomb instability'. Proceedings Of The Royal Society A-Mathematical Physical And Engineering Sciences, 467 (21292129):1243-1269 Globe icon [DOI] [Details]
(2010)'Intrinsic gain switching in optically injected quantum dot laser lasing simultaneously from the ground and excited state'
Olejniczak, Lukasz,Panajotov, Krassimir,Wieczorek, Sebastian,Thienpont, Hugo,Sciamanna, Marc (2010) 'Intrinsic gain switching in optically injected quantum dot laser lasing simultaneously from the ground and excited state'. Journal of The Optical Society of America B-Optical Physics, 27 (1111):2416-2423 Globe icon [DOI] [Details]
(2010)'Dynamics of two semiconductor lasers coupled by a passive resonator'
Erzgraber, H.,Wieczorek, S.,Krauskopf, B. (2010) 'Dynamics of two semiconductor lasers coupled by a passive resonator'. Physical Review E, 81 (55) Globe icon [DOI] [Details]
(2009)'Using chaos for remote sensing of laser radiation'
Chow, Weng W.,Wieczorek, Sebastian (2009) 'Using chaos for remote sensing of laser radiation'. Optics Express, 17 (99):7491-7504 Globe icon [DOI] [Details]
(2009)'Stochastic bifurcation in noise-driven lasers and Hopf oscillators'
Wieczorek, Sebastian (2009) 'Stochastic bifurcation in noise-driven lasers and Hopf oscillators'. Physical Review E, 79 (33) Globe icon [Details]
(2009)'Bifurcations and chaos in a semiconductor laser with coherent or noisy optical injection'
Wieczorek, Sebastian,Chow, Weng W. (2009) 'Bifurcations and chaos in a semiconductor laser with coherent or noisy optical injection'. Optics Communications, 282 (1212):2367-2379 Globe icon [DOI] [Details]
(2009)'Locking behavior of three coupled laser oscillators'
Erzgraber, H.,Wieczorek, S.,Krauskopf, B. (2009) 'Locking behavior of three coupled laser oscillators'. Physical Review E, 80 (22) Globe icon [DOI] [Details]
(2008)'Dynamics of two laterally coupled semiconductor lasers: Strong- and weak-coupling theory'
Erzgraber, H.,Wieczorek, S.,Krauskopf, B. (2008) 'Dynamics of two laterally coupled semiconductor lasers: Strong- and weak-coupling theory'. Physical Review E, 78 (66) Globe icon [Details]
(2007)'40 GHz bandwidth and 64 GHz resonance frequency in injection-locked 1.55 mu m VCSELs'
Chrostowski, Lukas,Faraji, Behnam,Hofmann, Werner,Amann, Markus-Christian,Wieczorek, Sebastian (2007) '40 GHz bandwidth and 64 GHz resonance frequency in injection-locked 1.55 mu m VCSELs'. IEEE Journal of Selected Topics In Quantum Electronics, 13 (55):1200-1208 Globe icon [DOI] [Details]
(2006)'Improved semiconductor-laser dynamics from induced population pulsation'
Wieczorek, Sebastian,Chow, Weng W.,Chrostowski, Lukas,Chang-Hasnain, Connie J. (2006) 'Improved semiconductor-laser dynamics from induced population pulsation'. IEEE Journal of Quantum Electronics, 42 (5-65-6):552-562 Globe icon [Details]
(2006)'Self-induced chaos in a single-mode inversionless laser'
Wieczorek, Sebastian,Chow, Weng W. (2006) 'Self-induced chaos in a single-mode inversionless laser'. Physical Review Letters, 97 (1111) Globe icon [Details]
(2005)'Global view of nonlinear dynamics in coupled-cavity lasers - a bifurcation study'
Wieczorek, S.,Chow, W. W. (2005) 'Global view of nonlinear dynamics in coupled-cavity lasers - a bifurcation study'. Optics Communications, 246 (4-64-6):471-493 Globe icon [DOI] [Details]
(2005)'The dynamical complexity of optically injected semiconductor lasers'
Wieczorek, S.,Krauskopf, B.,Simpson, T. B.,Lenstra, D. (2005) 'The dynamical complexity of optically injected semiconductor lasers'. Physics Reports-Review Section Of Physics Letters, 416 (1-21-2):1-128 Globe icon [DOI] [Details]
(2005)'Bifurcations of n-homoclinic orbits in optically injected lasers'
Wieczorek, S.,Krauskopf, B. (2005) 'Bifurcations of n-homoclinic orbits in optically injected lasers'. Nonlinearitynonlinearity, 18 (33):1095-1120 Globe icon [DOI] [Details]
(2004)'Spontaneously excited pulses in an optically driven semiconductor laser'
Wieczorek, S.,Lenstra, D. (2004) 'Spontaneously excited pulses in an optically driven semiconductor laser'. Physical Review E, 69 (11) Globe icon [DOI] [Details]
(2004)'Bifurcations and interacting modes in coupled lasers: A strong-coupling theory'
Wieczorek, S.,Chow, W. W. (2004) 'Bifurcations and interacting modes in coupled lasers: A strong-coupling theory'. Physical Review A, 69 (33) Globe icon [DOI] [Details]
(2004)'Analysis of optical emission from high-aluminum AlGaN quantum-well structures'
Wieczorek, S.,Chow, W. W.,Lee, S. R.,Fischer, A. J.,Allerman, A. A.,Crawford, M. H. (2004) 'Analysis of optical emission from high-aluminum AlGaN quantum-well structures'. Applied Physics Letters, 84 (2424):4899-4901 Globe icon [DOI] [Details]
(2004)'Chaos in practically isolated microcavity lasers'
Wieczorek, S.,Chow, W. W. (2004) 'Chaos in practically isolated microcavity lasers'. Physical Review Letters, 92 (2121) Globe icon [Details]
(2003)'Excitability and self-pulsations near homoclinic bifurcations in semiconductor laser systems'
B. Krauskopf, K. Schneider, J. Sieber, S. Wieczorek, and M. Wolfrum (2003) 'Excitability and self-pulsations near homoclinic bifurcations in semiconductor laser systems'. Optics Communications, 4-6 (215):367-379 Globe icon [DOI] [Details]
(2003)'Bifurcation transitions in an optically injected diode laser: theory and experiment'
Wieczorek, S.,Simpson, T. B.,Krauskopf, B.,Lenstra, D. (2003) 'Bifurcation transitions in an optically injected diode laser: theory and experiment'. Optics Communications, 215 (1-31-3):125-134 Globe icon [DOI] [Details]
(2002)'Multipulse excitability in a semiconductor laser with optical injection'
Wieczorek, S.,Krauskopf, B.,Lenstra, D. (2002) 'Multipulse excitability in a semiconductor laser with optical injection'. Physical Review Letters, 88 (66) Globe icon [DOI] [Details]
(2002)'Accumulating regions of winding periodic orbits in optically driven lasers'
Krauskopf, B.,Wieczorek, S. (2002) 'Accumulating regions of winding periodic orbits in optically driven lasers'. Physica D, 173 (1-21-2):97-113 Globe icon [DOI] [Details]
(2002)'Global quantitative predictions of complex laser dynamics'
Wieczorek, S.,Simpson, T. B.,Krauskopf, B.,Lenstra, D. (2002) 'Global quantitative predictions of complex laser dynamics'. Physical Review E, 65 (44) Globe icon [DOI] [Details]
(2001)'Sudden chaotic transitions in an optically injected semiconductor laser'
Wieczorek, S.,Krauskopf, B.,Lenstra, D. (2001) 'Sudden chaotic transitions in an optically injected semiconductor laser'. Optics Letters, 26 (1111):816-818 Globe icon [DOI] [Details]
(2001)'Unnested islands of period doublings in an injected semiconductor laser'
Wieczorek, S.,Krauskopf, B.,Lenstra, D. (2001) 'Unnested islands of period doublings in an injected semiconductor laser'. Physical Review E, 64 (55) Globe icon [DOI] [Details]
(2000)'Different types of chaos in an optically injected semiconductor laser'
Krauskopf, B.,Wieczorek, S.,Lenstra, D. (2000) 'Different types of chaos in an optically injected semiconductor laser'. Applied Physics Letters, 77 (1111):1611-1613 Globe icon [DOI] [Details]
(2000)'Mechanisms for multistability in a semiconductor laser with optical injection'
Wieczorek, S.,Krauskopf, B.,Lenstra, D. (2000) 'Mechanisms for multistability in a semiconductor laser with optical injection'. Optics Communications, 183 (1-41-4):215-226 Globe icon [DOI] [Details]
(1999)'A unifying view of bifurcations in a semiconductor laser subject to optical injection'
Wieczorek, S.,Krauskopf, B.,Lenstra, D. (1999) 'A unifying view of bifurcations in a semiconductor laser subject to optical injection'. Optics Communications, 172 (1-61-6):279-295 Globe icon [DOI] [Details]
(1998)'Interference stabilization of Rydberg atoms enhanced by multiple V-type resonances'
Parzynski, R.,Wieczorek, S. (1998) 'Interference stabilization of Rydberg atoms enhanced by multiple V-type resonances'. Physical Review A, 58 (44):3051-3057 Globe icon [DOI] [Details]

Conference Publications

YearPublication
(2009)SPIE Photonics West 2009: Physics and Simulation of Optoelectronic Devices XVII
S. Wieczorek, B. Krauskopf and D. Lenstra (2009) Sensitivity of semiconductor lasers to coherent and noisy optical injection: towards instability-based laser sensors SPIE Photonics West 2009: Physics and Simulation of Optoelectronic Devices XVII Globe icon [DOI] [Details]
(2008)SPIE Photonics Europe 2008: Semiconductor Lasers and Laser Dynamics III
P. Slowiński ; B. Krauskopf ; S. Wieczorek (2008) Mode structure of a semiconductor laser with feedback from two external filters SPIE Photonics Europe 2008: Semiconductor Lasers and Laser Dynamics III Globe icon [DOI] [Details]
(2008)SPIE Photonics Europe 2008: Semiconductor Lasers and Laser Dynamics III
Hartmut Erzgräber ; Sebastian Wieczorek ; Bernd Krauskopf (2008) Bifurcations of composite-cavity modes in multi-stripe laser arrays SPIE Photonics Europe 2008: Semiconductor Lasers and Laser Dynamics III Globe icon [DOI] [Details]
(2004)SPIE Photonics Europe 2004: Semiconductor Lasers and Laser Dynamics I
Sebastian M. Wieczorek ; Weng W. Chow (2004) Dynamics of multimode coupled lasers SPIE Photonics Europe 2004: Semiconductor Lasers and Laser Dynamics I Globe icon [DOI] [Details]
(2004)Fluctuations and Noise in Photonics and Quantum Optics II
Daan Lenstra ; Gautam Vemuri ; Sebastian M. Wieczorek ; Mirvais Yousefi (2004) The influence of noise on the dynamics of semiconductor lasers Fluctuations and Noise in Photonics and Quantum Optics II Globe icon [DOI] [Details]
(2003)SPIE Photonics West 2003: Physics and Simulation of Optoelectronic Devices XI
Bernd Krauskopf, Sebastian Wieczorek, and Daan Lenstra, (2003) Multipulse excitability in injected lasers SPIE Photonics West 2003: Physics and Simulation of Optoelectronic Devices XI Globe icon [DOI] [Details]
(2002)SPIE Photonics West 2002: Physics and Simulation of Optoelectronic Devices X
Sebastian Wieczorek, Thomas B. Simpson, Bernd Krauskopf, and Daan Lenstra, (2002) Complex dynamics of an optically injected semiconductor laser: bifurcation theory and experiment SPIE Photonics West 2002: Physics and Simulation of Optoelectronic Devices X Globe icon [DOI] [Details]
(2000)SPIE Photonics West 2000: Physics and Simulation of Optoelectronic Devices VIII
Sebastian Wieczorek, Bernd Krauskopf, and Daan Lenstra, (2000) Global view of complicated dynamics in optically injected semiconductor lasers SPIE Photonics West 2000: Physics and Simulation of Optoelectronic Devices VIII Globe icon [DOI] [Details]
(2000)IEEE LEOS Annual Meeting 2000
Sebastian Wieczorek, Bernd Krauskopf, and Daan Lenstra, (2000) Bifurcations of chaotic attractors in a semiconductor laser subject to optical injection IEEE LEOS Annual Meeting 2000 Globe icon [DOI] [Details]
(2003)AIP Conference
T. B. Simpson, S. Wieczorek, B. Krauskopf and D. Lenstra (2003) Mapping the Complex Dynamics of a Semiconductor Laser Subject to Optical Injection AIP Conference Globe icon [DOI] [Details]
(2000)SPIE Photonics West 2000: Physics and Simulation of Optoelectronic Devices VIII
Bernd Krauskopf, Sebastian Wieczorek, and Daan Lenstra, (2000) Routes to chaos in an optically injected semiconductor laser SPIE Photonics West 2000: Physics and Simulation of Optoelectronic Devices VIII , pp.612-619 Globe icon [DOI] [Details]
(2000)CLEO Europe 2000
S. Wieczorek, B. Krauskopf and D. Lenstra (2000) Multistability in optically injected semiconductor lasers CLEO Europe 2000 Globe icon [DOI] [Details]

Honours and Awards

 YearTitleAwarding Body
2014Mathematics and Computer Science Best Supervisor Award University of Exeter
2002The 2002 IEEE LEOS (Lasers and Electro-Optics Society) Graduate Student Award IEEE Lasers and Electro-Optics Society
1998The Adam Mickiewicz University Medal Rektor of Adam Mickiewicz University
1997Scholarship from the Polish Ministry of Education for distinguished students Polish Ministry of Education

Professional Associations

 AssociationFunctionFrom / To
SIAM (Society for Industrial and Applied Mathematics) Member01-OCT-13 /

Committees

 CommitteeFunctionFrom / To
Scientific Advisory Board of Dynamics Days Europe Conference Member2015 /
Program Committee of the SIAM Annual Meeting Member2013 /
CliMathNet - UK Mathematics in Climate Network Management Committee Member2013 /
Program Committee of the biannual SPIE Laser Dynamics Conference and Photonics Europe Symposium Member2008 /

Journal Activities

 JournalRoleTo / From
Discrete And Continuous Dynamical Systems-Series B Member of Editorial Board01-JAN-14 -
Communications In Nonlinear Science And Numerical Simulation Guest Editor01-OCT-14 -

Recent Postgraduates

 Graduation YearStudent NameInstitutionDegree TypeThesis Title
2014Clare Perryman University of ExeterPhDRate-Induced Bifurcations
2011Nicholas Blackbeard University of ExeterPhDA Journey Through the Dynamical World of Coupled Laser Oscillators.
2011Piotr Slowinski University of BristolPhDBifurcation Analysis of a Semiconductor Laser with two Filtered Optical Feedback Loops
2011Victoria Crockett University of ExeterPhDOrbit Space Reduction for Symmetric Dynamical Systems with an Application to Laser Dynamics"

External Collaborators

 NameOrganisation / InstituteCountry
Peter Ashwin University of ExeterUNITED KINGDOM
Weng W. Chow Sandia National LaboratoriesU.S.A.
Peter Cox University of ExeterUNITED KINGDOM
Michel Crucifix Université Catholique de LouvainBELGIUM
Peter Ditlevsen Niels Bohr Institute CopenhagenDENMARK
Johan Dubbeldam Technical University DelftHOLLAND
Bernd Krauskopf University of AucklandNEW ZEALAND
Hinke Osinga University of AucklandNEW ZEALAND
Krassimir Panajotov VU BrusselsBELGIUM