Dr. Thorsten Ackemann

Profile

Academic positionAssociate Professor, Senior Lecturer, Reader
Research fieldsAtomic Physics, Molecular Physics, Laser Physics
KeywordsVECSEL, dynamics of vertical-cavity surface-emitting laser, nonlinear optics in ensembles of cold atoms, nonlinear photonics, self-organization and solitons

Current contact address

CountryUnited Kingdom
CityGlasgow
InstitutionUniversity of Strathclyde
InstituteDepartment of Physics
Homepagehttp://www.photonics.phys.strath.ac.uk/People/Thorsten/Thorsten.html

Host during sponsorship

Prof. Dr. Gian Luca LippiInstitut Non Lineaire de Nice, UMR 6618 CNRS-UNSA, Universite Cote d'Azur, Valbonne
Prof. Dr. Jorge R. TredicceInstitut Non Lineaire de Nice, UMR 6618 CNRS-UNSA, Universite Cote d'Azur, Valbonne
Start of initial sponsorship01/01/1998

Programme(s)

1997Feodor Lynen Research Fellowship Programme

Publications (partial selection)

2003G. Labeyrie, T. Ackemann, B. Klappauf, M. Pesch, G.L. Lippi, and R. Kaiser: Non-linear beam shaping by a cloud of cold Rb atoms. In: European Phys. J. D, 2003, 473-483
2003G. Labeyrie, T. Ackemann, B. Klappauf, M. Pesch, G.L. Lippi, and R. Kaiser: Non-linear effects and patterns in a cloud of cold Rb atoms. In: Opt. & Photonics News, 2003, 41
2001Thorsten Ackemann, B. Schäpers, W. Lange: Characteristics and possible applications of localized structures in an optical pattern-forming system. In: SPIE, 2001, 130-137
2001Thorsten Ackemann, M. Sondermann: Characteristics of polarization switching from the low to the high frequency mode in vertical-cavity surface-emitting lasers. In: Appl. Phys. Lett., 2001, 3574-3576
2001Thorsten Ackemann, M. Sondermann: Characteristics of polarization switching in verticalcavity surface-emitting lasers . In: SPIE, 2001, 44-54
2001Thorsten Ackemann, W. Lange: Optical pattern fomation in alkali metal vapors: Mechanisms, phenomena und use. In: Appl. Phys. B, 2001, 21-34
2001Thorsten Ackemann, A. Aumann, E. Große Westhoff, Yu. A. Logvin, W. Lange: Polarization degrees of freedom in optical pattern forming systems: alkali metal vapor in a single-mirror arrangement. In: J. Opt. B: Quantum Semiclass Opt., 2001, S124-S132
2001Thorsten Ackemann, W. Grosse-Nobis, G. L. Lippi: The Gouy phase shift, the average phase lag of Fourier compojnents of Hermite-Gaussian modes and their application to resonance conditions in optical cavities. In: Opt. Commun., 2001, 5-14
2000Thorsten Ackemann, B. Schäpers, M. Feldmann, W. Lange: Interaction of localized structures in an optical pattern-forming system . In: Phys. Rev. Lett., 2000, 748-751
2000Thorsten Ackemann, A. Aumann, E. Große Westhoff, W. Lange: Magnetic Field Control over Microscopic Symmetry Properties of an Optical Pattern Forming System: experiment. In: J. Opt. B: Quantum Semiclass. Opt., 2000, 421-425
2000Thorsten Ackemann, Yu. A. Logvin, A. Aumann, M. Tegeler, W. Lange: Magnetic Field Control over Microscopic Symmetry Properties of an Optical Pattern Forming System: theory. In: J. Opt. B: Quantum Semiclass. Opt., 2000, 426-431
2000Thorsten Ackemann, E. Große Westhoff, V. Kneisel, Yu. A. Logvin, W. Lange: Pattern formation in the presence of an intrinsic polarization instability. In: J. Opt. B: Quantum Semiclass. Opt., 2000, 386-392
2000Thorsten Ackemann, S. Barland, M. Giudici, J. R. Tredicce, S. Balle, R. Jäger, M. Grabherr, M. Miller, K. J. Ebeling Patterns in broad-area microcavities . In: Phys. Stat. Sol. B, 2000, 133-136
2000Thorsten Ackemann, S. Barland, M. Cara, S. Balle, J. R. Tredicce, R. Jäger, M. Grabherr, M. Miller, K. H. Ebeling: Spatial mode structure of bottom-emitting broad-area vertical-cavity lasers. In: J. Opt. B: Quantum Semiclass. Opt., 2000, 406-412
2000T. Ackemann, S. Barland, J. R. Tredicce, M. Cara, S. Balle, R. Jäger, M. Grabherr, M. Miller, and K. J. Ebeling: Spatial structure of broad-area vertical-cavity regenerative amplifiers. In: Opt. Lett, 2000, 814-816
2000Thorsten Ackemann, Yu. A. Logvin, B. Schäpers Stationary and drifting localized structures near a multiple bifurcation point. In: Phys. Rev. E, 2000, 4622-4625
1999Thorsten Ackemann, W. Lange, A. Aumann, E. Büthe, Yu. A. Logvin: Atomic vapors - a versatile tool in studies of optical pattern formation. In: Chaos, Solitons & Fractals, 1999, 617-626
1999Thorsten Ackemann, G. L. Lippi, H. Grassi, A. Aumann, B. Schäpers, J. P. Seipenbusch: Bistability and transients in CO2 laser patterns. In: J. Opt. B: Quantum Semiclass. Opt. , 1999, 161-165
1999Thorsten Ackemann, B. Schäpers, J. P. Seipenbusch, Yu. A. Logvin, W. Lange: Drift instability and locking behaviour of optical patterns - an investigation using Fourier filtering. In: Chaos, Solitons & Fractals, 1999, 665-673
1999Thorsten Ackemann, A. Aumann, E. Große Westhoff, R. Herrero, W. Lange: Interplay of dispersion and absorption in a new optical pattern-forming system. In: J. Opt. B: Quantum Semiclass Opt., 1999, 166-170
1999Thorsten Ackemann, B. Giese, B. Schäpers, W. Lange: Investigation of pattern forming mechanisms by Fourier filtering: properties of hexagons and the transition to stripes in an anisotropic system. In: J. Opt. B: Quantum Semiclass. Opt., 1999, 70-76
1999Thorsten Ackemann, A. Aumann, Yu. A. Logvin: Modulational instability and beam splitting in the nonlinear light propagation in sodium vapor. In: J. Opt. B: Quantum Semiclass Opt., 1999, 90-95
1999Thorsten Ackemann, B. Schäpers, J. P. Seidenbusch, W. Lange: Nonequilateral drifting hexagons in a strongly misaligned single-mirror system. In: J. Opt. B: Quantum Semiclass Opt., 1999, 58-63
1999Thorsten Ackemann, M. Möller, J. Seipenbusch, B. Shäpers, A. Aumann, A. Gahl, H.-J. Bruns, W. Lange: Observing pattern dynamics in nonlinear optical systems using the video-sampling method. In: Chaos, Solitons & Fractals, 1999, 675-679
1999Thorsten Ackemann, M. Giudici, S. Balle, S. Barland, J. R. Tredicce: Polarization dynamics of vertical-cavity surface-emitting lasers with optical feedback: experiment and model. In: J. Opt. Soc. Am. B, 1999, 2114-2123
1999Thorsten Ackemann, R. Herrero, E. Große Westhoff, A. Aumann: Twelvefold quasiperiodic patterns in a nonlinear optical system with continuous rotational symmetry. In: Phys. Rev. Lett., 1999, 4627-46 30