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Tobias Hansson

Post-Doc Fellow

[email protected]

Tobias Hansson received his M.Sc. degree in engineering physics in 2007 from Chalmers University of Technology, Sweden, after completing thesis work on optical time-domain methods at Dartmouth College, USA, in the group of Prof. Ulf Österberg. In 2007 he started Ph.D. studies under the supervision of Prof. Mietek Lisak and Prof. Dan Anderson in the Nonlinear Electrodynamics group at Chalmers University of Technology. He received the Swedish licentiate degree and the Ph.D. degree in electrical engineering in 2009 and 2011, respectively, for his theoretical work in nonlinear optics on the topic of partially coherent wave propagation, and his investigations of the nonlinear dynamics of solitary waves and instability phenomena in slowly responding nonlinear media. Following his Ph.D. he has done postdoctoral research on the modeling of the spatio-temporal dynamics of optical frequency comb generation in collaboration with Prof. Stefan Wabnitz at the University of Brescia, Italy. Tobias is currently, since June 2016, working as a postdoctoral fellow in the group of Roberto Morandotti (UOP) at INRS-EMT. His research activities concerns the theoretical modeling of mode-locked lasers and microresonator devices.

  1. Hansson, D. Anderson, M. Lisak, V. E. Semenov and U. Österberg, “Quasilinear Evolution and Saturation of the Modulational Instability of Partially Coherent Optical Waves”, Phys. Rev. A 78, 011807 (2008).
  2. Hansson, D. Anderson, M. Lisak, V. E. Semenov and U. Österberg, “Propagation of Partially Coherent Light Beams with Parabolic Intensity Distribution in Noninstantaneous Nonlinear Kerr Media”, J. Opt. Soc. Am. B, 25, 1780 (2008).
  3. V. Kim, S. A. Skobelev, D. Anderson, T. Hansson and M. Lisak, “Extreme Nonlinear Optics in a Kerr Medium: Exact Soliton Solutions for a Few Cycles”, Phys. Rev. A 77, 043823 (2008).
  4. Semenov, M. Lisak, D. Anderson, T. Hansson, L. Helczynski-Wolf and U. Österberg, “Mathematical Basis for Analysis of Partially Coherent Wave Propagation in Nonlinear, Non-Instantaneous, Kerr Media”, J. Phys. A: Math. Theor. 41, 335207 (2008).
  5.  Hansson, D. Anderson and M. Lisak, “Propagation of Partially Coherent Solitons in Saturable Logarithmic Media: A Comparative Analysis”, Phys. Rev. A 80, 033819 (2009).
  6. Jeong, U. Österberg and T. Hansson, “Evolution of Sommerfeld and Brillouin Precursors in Intermediate Spectral Regimes”, J. Opt. Soc. Am. B. 26, 2455 (2009).
  7. Hansson, D. Anderson and M. Lisak, “Soliton Interaction in Logarithmically Saturable Media”, Opt. Comm. 283, 318 (2010).
  8. Cattani, A. Kim, T. Hansson, D. Anderson and M. Lisak, “Multihump Soliton-Like Structures in Interactions of Lasers and Bose-Einstein Condensates”, EPL 94, 53003 (2011).
  9. Hansson, D. Anderson, M. Desaix and M. Lisak, “Self-Similar Collapse and Blow up of Laser Beams in Nonlinear Kerr Media – Revisited”, Opt. Comm. 284, 3422 (2011).
  10. Hansson, M. Lisak and D. Anderson, “Generalized Dressing Method for Nonlinear Evolution Equations Describing Partially Coherent Wave Propagation in Noninstantaneous Kerr Media”, Phys. Rev. E 84, 056601 (2011).
  11.  Hansson, M. Lisak and D. Anderson, “Integrability and Conservation Laws for the Nonlinear Evolution Equations of Partially Coherent Waves in Noninstantaneous Kerr Media”, Phys. Rev. Lett. 108, 063901 (2011).
  12. Hansson, E. Wallin, G. Brodin and M. Marklund, “A Scalar Wigner Theory for Polarized Light in Nonlinear Kerr Media”, J. Opt. Soc. Am. B 30, 1765 (2013) (arXiv:1210.7107 [physics.optics]).
  13. Hansson, D. Modotto and S. Wabnitz, “Dynamics of the Modulational Instability in Microresonator Frequency Combs”, Phys. Rev. A 88, 023819 (2013) (arXiv:1306.5558 [physics.optics]).
  14. Hansson, D. Modotto and S. Wabnitz, “On the numerical simulation of Kerr frequency combs using coupled mode equations”, Opt. Comm. 312, 134 (2013) (arXiv:1307.3428 [physics.optics]).
  15. Hansson, D. Modotto, S. Wabnitz, “Nonlinear dynamics of comb generation in optical microresonators”, Proceedings of SPIE – The International Society for Optical Engineering 8960 (2014).
  16. Picozzi, J. Garnier, T. Hansson, P. Suret, S. Randoux, G. Millot, D.N. Christodoulides, “Optical wave turbulence: Toward a unified nonequilibrium thermodynamic formulation of statistical nonlinear optics”, Reports 542, 1 (2014).
  17.  Hansson, D. Modotto, S. Wabnitz, “Analytical approach to the design of microring resonators for nonlinear four-wave mixing applications”, J. Opt Soc. Am. B 31, 1109 (2014).
  18. Hansson and S. Wabnitz, “Bichromatically pumped microresonator frequency combs”, Phys. Rev. A 90, 013811 (2014) (arXiv:1404.2792 [physics.optics]).
  19.  Hansson, D. Modotto, S. Wabnitz , “Mid-infrared soliton and Raman frequency comb generation in silicon microrings.”, Opt. Lett. 39, 6747 (2014) (arXiv:1404.3047 [physics.optics]).
  20.  Hansson and S. Wabnitz, “Frequency comb generation beyond the Lugiato-Lefever equation: multi-stability and super cavity solitons”, J. Opt. Soc. Am. B 32, 1259 (2015) (arXiv:1503.03274 [physics.optics]).
  21. Hansson, D. Modotto, and S. Wabnitz, “Complex temporal dynamics in optical cavities,” IEEE Proceedings: Spatiotemporal Complexity in Nonlinear Optics (SCNO) 2015 (2015).
  22. Leo, T. Hansson, I. Ricciardi, M. De Rosa, S. Coen, S. Wabnitz, and M. Erkintalo, “Walk-off-induced modulation instability, temporal pattern formation, and frequency comb generation in cavity-enhanced second-harmonic generation”, Phys. Rev. Lett. 116, 033901 (2015) (arXiv:1510.04261 [physics.optics]).
  23. Leo, T. Hansson, I. Ricciardi, M. De Rosa, S. Coen, S. Wabnitz, and M. Erkintalo, “Frequency comb formation in doubly resonant second-harmonic generation”, Phys. Rev. A 93, 043831 (2016) (arXiv:1602.03517 [physics.optics]).
  24. Hansson, F. Leo, M. Erkintalo, J. Anthony, S. Coen, I. Ricciardi, M. De Rosa, and S. Wabnitz, “Single envelope equation modeling of multi-octave comb arrays in microresonators with quadratic and cubic nonlinearities”, J. Opt. Soc. Am B 33, 1207 (2016) (arXiv:1602.08087 [physics.optics]).
  25. Hansson, F. Leo, M. Erkintalo, J. Anthony, S. Coen, I. Ricciardi, M. De Rosa, and S. Wabnitz, “Single envelope equation modeling of multi-octave comb arrays in microresonators with quadratic and cubic nonlinearities”, J. Opt. Soc. Am B 33, 1207 (2016) (arXiv:1602.08087 [physics.optics]).
  26. Hansson and S. Wabnitz, “Dynamics of microresonator frequency comb generation: models and stability”, Nanophotonics 5, 231 (2016).
  1. Jeong, U. Österberg and T. Hansson, “Transitional Characteristics of Optical Precursors between Two Different Parameter Regimes”, Progress in Electromagnetics Research Symposium (PIERS), Cambridge USA, June 2008.
  2. Hansson, D. Anderson, M. Lisak and V. Semenov, “Parabolic Similarity Solutions of the Nonlinear Schrödinger and Wigner-Moyal Equations”, SIAM Conference on Nonlinear Waves and Coherent Structures, Rome Italy, July 2008.
  3. Hansson, D. Anderson and M. Lisak, “Propagation of Partially Coherent Light in Nonlinear Media”, Progress in Electromagnetics Research Symposium (PIERS), Moscow Russia, August 2009.
  4. Hansson, D. Anderson, M. Lisak, V. Semenov and U. Österberg,”Quasi-Linear Evolution and Saturation of the Modulational Instability of Partially Coherent Optical Waves”, The Second International Conference: Nonlinear Waves – Theory and Applications, Beijing China, June 2010.
  5. Hansson, D. Modotto and S. Wabnitz,”Dynamics of the Modulational Instability in Microresonator Frequency Combs”, The 2013 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC), Munich Germany, May 2013.
  6. Wabnitz, T. Hansson and D. Modotto,”Nonlinear Dynamics of Multiwave Mixing in Optical Microcavities”, The Third International Conference: Nonlinear Waves – Theory and Applications, Beijing China, June 2013 (invited talk).
  7. Hansson,”Scalar Wigner Formalism for Polarized Light in Birefringent Nonlinear Kerr Media”, Workshop on: Spatio-temporal complexity in optical fibers, Como Italy, September 2013.
  8. Hansson, D. Modotto, S. Wabnitz,”Nonlinear dynamics of comb generation in optical microresonators”, LASE 2014 – SPIE Photonics West, San Francisco USA, February 2014 (invited talk).
  9. Hansson and S. Wabnitz,”Dual pump microresonator frequency comb generation and optical buffer memories”, ECIO-MOC 2014 – European Conference on Integrated Optics, Nice France, June 2014.
  10. Hansson, “Modeling the dynamics of frequency comb generation and design of planar microring resonators”, Advanced Photonics Congress – Nonlinear Photonics 2014, Barcelona Spain, July 2014 (invited talk).
  11. Hansson, D. Modotto and S. Wabnitz, “Dynamics of Frequency Comb Generation and Design of Planar Microring Resonators”, SIAM Conference on Nonlinear Waves and Coherent Structures, Cambridge UK, August 2014.
  12. Hansson, D. Modotto and S. Wabnitz,”Mid-infrared octave spanning frequency comb generation in silicon microrings”, 40th European Conference on Optical Communication (ECOC), Cannes France, September 2014.
  13. Hansson and S. Wabnitz,”Optical Frequency Comb Generation beyond the Lugiato-Lefever Equation”, The 2015 Conference on Lasers and Electro-Optics Europe & the European Quantum Electronics Conference (CLEO/Europe-EQEC 2015), Munich Germany, June 2015.
  14. Morais, O. Stepanenko, A. Lemaître, C. Gomez, T. Hansson, G. Leo and S. Wabnitz, “Towards telecom frequency comb generation in AlGaAs microrings”, The 2015 Conference on Lasers and Electro-Optics Europe & the European Quantum Electronics Conference (CLEO/Europe-EQEC 2015), Munich Germany, June 2015.
  15. Hansson and S. Wabnitz,”Multi-Stability and Super Cavity Solitons in Microresonator Frequency Combs”, Advanced Photonics 2015, Boston USA, June 2015.
  16. Hansson and S. Wabnitz,”Stability of Microresonator Soliton Frequency Combs”, Photonica 2015, Belgrade Serbia, August 2015.
  17. Parisi, I. Ricciardi, S. Mosca, P. Maddaloni, L. Santamaria, T. Hansson, S. Wabnitz, P. De Natale and M. De Rosa, “Direct generation of optical frequency combs in χ(2) nonlinear cavities“, INO Annual Symposium 2015, Naples Italy, November 2015.
  18. Leo, T. Hansson, I. Ricciardi, M. De Rosa, S. Coen, S. Wabnitz and M. Erkintalo, “Modulation instabilities, temporal patterns and frequency comb generation in quadratic nonlinear resonators“, INO Annual Symposium 2015, Naples Italy, November 2015.

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