A01 – Optical control of phonons and their dissipation in nanostructures

Funding period: 2008 – 2019

Principal investigator: Thomas Dekorsy

Scientific staff: Changxiu Li, Fan Yang
Former members: Delia Brick, Yuning Guo, Dirk Heinecke, Martin Großmann, Mike Hettich, Martin Schubert

Pulse repetition rate doubling by line-by-line phase modulation of a frequency comb using temporal self-imaging. This techniques enables resonant excitation of coherent acoustic phonons using high-repetition rate pulse lasers.

The goal of this project is the generation and control of coherent acoustic phonons in confined geometries through the excitation with femtosecond laser pulses. Phonon dissipation (and the influence of roughness and temperature on it), mode conversion, tuning and coupling of phonon modes in systems containing semiconductors, metals and emerging classes of materials will be investigated. Lateral propagation of surface acoustic waves will be extended to nanostructured membranes and 3D systems. New pathways arise from these systems for the control of phonons with respect e.g. to the thermoelectric properties which will be investigated as function of temperature and coupling to different environments with high spatial resolution.

For further information please also refer to  DLR, Institut für Technische Physik, Stuttgart

List of publications


  • Changxiu Li, Vitalyi Gusev, Thomas Dekorsy, and Mike Hettich
    All optical control of comb-like coherent acoustic phonons in multiple quantum well structures through double-pump-pulse pump-probe experiments
    Opt. Express 27, 18706-18730 (2019) - DOI: 10.1364/OE.27.018706
  • Changxiu Li, Vitalyi Gusev, Emmanouil Dimakis, Thomas Dekorsy, and Mike Hettich
    Broadband Photo-Excited Coherent Acoustic Frequency Combs and Mini-Brillouin-Zone Modes in a MQW-SESAM Structure
    Appl. Sci.  9, 289 (2019) - DOI: 10.3390/app9020289


  • Yuning Guo, Thomas Dekorsy, and Mike Hettich
    Topological guiding of elastic waves in phononic metamaterials based on 2D pentamode structures
    Nature, Scientific Reports 7, 18043 (2017) - DOI: 10.1038/s41598-017-18394-8
  • Delia Brick, Erkan Emre, Martin Grossmann, Thomas Dekorsy, and Mike Hettich
    Picosecond Photoacoustic Metrology of SiO2 and LiNbO3 Layer Systems Used for High Frequency Surface-Acoustic-Wave Filters
    Applied Sciences  7(8), 822 (2017) - DOI: 10.3390/app7080822
  • D. Brick, V. Engemaier, Y. Guo, M. Grossmann, G. Li, D. Grimm, O. Schmidt, M. Schmidt, V. Gusev, M. Hettich, and T. Dekorsy
    Interface adhesion and structural characterization of rolled-up GaAs/In0.2Ga0.8As multilayer tubes by coherent phonon spectroscopy
    Scientific Reports 7, 5385 (2017) - DOI: 10.1038/s41598-017-05739-6
  • Martin Grossmann, Martin Schubert, Chuan He, Delia Brick, Elke Scheer, Mike Hettich, Vitalyi Gusev and Thomas Dekorsy
    Characterization of thin-film adhesion and phonon lifetimes in Al/Si membranes by picosecond ultrasonics
    New Journal of Physics 19(5) (2017)- DOI: 10.1088/1367-2630/aa6d0
  • Yuning Guo, Delia Brick, Martin Grossmann, Mike Hettich, and Thomas Dekorsy
    Acoustic beam splitting at low GHz frequencies in a defect-free phononic crystal,
    Applied Physics Letters 110, 031904 (2017) -DOI: 10.1063/1.4974491 
  • Yuning Guo, Mike Hettich, and Thomas Dekorsy
    Guiding of elastic waves in a two-dimensional graded phononic crystal plate
    New Journal of Physics 19, 013029 (2017) - DOI : 10.1088/1367-2630/aa5703
  • Chuan He, Oliver Ristow, Martin Grossmann, Delia Brick, Yuning Guo, Martin Schubert, Mike Hettich, Vitalyi Gusev, and Thomas Dekorsy
    Acoustic waves undetectable by transient reflectivity measurements
    Phys. Rev. B 95, 184302 (2017) - DOI: 10.1103/PhysRevB.95.184302
  • C. Li, N. Krauß, G. Schäfer, L. Ebner, O. Kliebisch, J. Schmidt, S. Winnerl, M. Hettich, and T. Dekorsy
    High-speed asynchronous optical sampling based on GHz Yb:KYW oscillators
    Opt. Express  25, 9204-9212 (2017) - DOI: 10.1364/OE.25.009204


  • Oliver Kliebisch, Dirk C. Heinecke, and Thomas Dekorsy
    Ultrafast time-domain spectroscopy system using 10 GHz asynchronous optical sampling with 100 kHz scan rate
    Optics Express 26, 29930 (2016) - DOI: 10.1364/OE.24.029930
  • M. Hettich, K. Jacob, O. Ristow, M. Schubert, A. Bruchhausen, V. Gusev, and T. Dekorsy
    Viscoelastic properties and efficient acoustic damping in confined polymer nano-layers at GHz frequencies
    Scientific Reports, 6, 33471 - DOI: 10.1038/srep33471
  • D. Issenmann, S. Eon, H. Bracht, M. Hettich, T.Dekorsy, G.Buth, R. Steininger, T. Baumbach, J. L. Hansen, A. N. Larsen, J. W. Ager III, E. E. Haller, and A. Plech
    Ultrafast study of phonon transport in isotopically controlled semiconductor nanostructures
    Phys. Status Solidi A 213, Vol. 3, 541 (2016) - DOI: 10.1002/pssa.201532462
  • Yuning Guo, Martin Schubert, and Thomas Dekorsy
    Finite element analysis of surface modes in phononic crystal waveguides
    J. Appl. Phys. 119, 124302 (2016) - DOI: 10.1063/1.4944804
  • S. Volz, J. Ordonez-Miranda, A. Shchepetov, M. Prunnila, J. Ahopelto, T. Pezeril, G. Vaudel, V. Gusev, P. Ruello, E.M. Weig, M. Schubert, M. Hettich, M. Grossmann, T. Dekorsy, F. Alzina, B. Graczykowski, E. Chavez-Angel, J.S. Reparaz, M. R. Wagner, C.M. Sotomayor-Torres, S. Xiong, S. Neogi
    Nanophononics: state of the art and perspectives
    Eur. Phys. J.B 89, 15 (2016) - DOI: 10.1140/epjb/e2015-60727-7


  • C. He, M. Grossmann, D. Brick, M. Schubert, S. V. Novikov, C. T. Foxon, V. Gusev, A. J. Kent and T. Dekorsy,
    Study of confined coherent acoustic phonon modes in a free-standing cubic GaN membrane by femtosecond spectroscopy
    Appl. Phys. Lett. 107, 112105 (2015) - DOI: 10.1063/1.49131495
  • M. Schubert, H. Schaefer, J. Mayer, A. Laptev, M. Hettich, M. Merklein, C. He, C. Rummel, O. Ristow, M. Großmann, Y. Luo, V. Gusev, K. Samwer, M. Fonin, T. Dekorsy, and J. Demsar
    Collective Modes and Structural Modulation in Ni-Mn-Ga(Co) Martensite Thin Films Probed by Femtosecond Spectroscopy and Scanning Tunneling Microscopy
    Phys. Rev. Lett. 115, 076402 (2015) - DOI: 10.1103/PhysRevLett.115.076402
    Universität Konstanz, Pressemitteilung
  • M. Grossmann, Oliver Ristow, Mike Hettich, Chuan He, Reimar Waitz, Elke Scheer, Vitalyi Gusev, Thomas Dekorsy and Martin Schubert
    Time-resolved detection of propagating Lamb waves in thin silicon membranes with frequencies up to 197 GHz
    Appl. Phys. Lett. 106, 171904 (2015) - DOI: 10.1063/1.4919132
  • M. Schubert, M. Grossmann, C. He, D. Brick, P. Scheel, O. Ristow, V. Gusev, and T. Dekorsy
    Generation and detection of gigahertz acoustic oscillations in thin membranes (review)
    Ultrasonics 56, 109 (2015) - DOI: 10.1016/j.ultras.2014.06.018


  • C. He, M. Daniel, M. Grossmann, O. Ristow, D. Brick, M. Schubert, M. Albrecht, and Th. Dekorsy
    Dynamics of coherent acoustic phonons in thin films of CoSb3 and partially filled YbxCo4Sb12 skutterudites
    Physical Review B. 89 174303 (2014) - DOI: 10.1103/PhysRevB.89.174303


  • M. Grossmann, M. Klingele, P. Scheel, O. Ristow, M. Hettich, C. He, R. Waitz, M. Schubert, A. Bruchhausen, V. Gusev, E. Scheer, and T. Dekorsy
    Femtosecond spectroscopy of acoustic frequency combs in the 100-GHz frequency range in Al/Si membranes
    Phys. Rev. B 88, 205202 (2013) - DOI: 10.1103/PhyRevB.88.205202
  • J. Cuffe, O. Ristow, E. Chávez, A. Shchepetov, P-O. Chapuis, F. Alzina, M. Hettich, M. Prunnila, J. Ahopelto, T. Dekorsy, and C. M. Sotomayor Torres
    Lifetimes of confined acoustic phonons in ultrathin silicon membranes
    Physical Review Letters 110, 095503 (2013) - DOI: 10.1103/PhysRevLett.110.0995503
  • D. C. Heinecke, O. Kliebisch, J. Flock, A. Bruchhausen, K. Köhler, and T. Dekorsy
    Selective excitation of zone-folded phonon modes within one triplet in a semiconductor superlattice
    Physical Review B 87, 075307 (2013) - DOI: 10.1103/PhysRevB.87.075307


  • M. Hettich, K. Jacob, O. Ristow, C. He, J. Mayer, M. Schubert, V. Gusev, A. Bruchhausen, and T. Dekorsy
    Imaging of a patterned and buried molecular layer by coherent acoustic phonon spectroscopy
    Appl. Phys. Lett. 101, 191606 (2012) - DOI: 10.1063/1.4767141
  • V. Kotaidis, T. Dekorsy, S. Ibrahimkutty, D. Issenmann, D. Khakhulin, and A. Plech
    Vibrational symmetry breaking of supported nanospheres
    Physical Review B 86, 100101 (R) (2012) - DOI: 10.1103/PhysRevB.86.100101
  • A. Bruchhausen, J. Lloyd-Hughes, M. Hettich, R. Gebs, M. Grossmann, O. Ristow, A. Bartels, M. Fischer, M. Beck, G. Scalari, J. Faist, A. Rudra, P. Gallo, E. Kapon, and T. Dekorsy
    Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy
    J. Appl. Phys. 112, 033517 (2012) - DOI: 10.1063/1.4745044
  • M. Schubert, M. Grossmann, O. Ristow, M. Hettich, A. Bruchhausen, E.C.S. Barretto, E. Scheer, V. Gusev, and T. Dekorsy
    Spatial-temporally resolved high-frequency surface acoustic waves on silicon investigated by femtosecond spectroscopy
    Appl. Phys. Lett. 101, 013108 (2012) - DOI: 10.1063/1.4729891


  • M. Hettich, A. Bruchhausen, S. Riedel, T. Geldhauser, S. Verleger, D. Issenmann, O. Ristow, R. Chauhan, J. Dual, A. Erbe, E. Scheer, P. Leiderer, and T. Dekorsy
    Modification of vibrational damping times in thin gold films by self-assembled molecular layers
    Appl. Phys. Lett. 98, 261908 (2011) – DOI: 10.1063/1.3604790
  • A. Bruchhausen M. Hettich, J. Lloyd-Hughes, M. Fischer, M. Beck, G. Scalari, J. Faist, T. Dekorsy
    Observation of Zone-Folded Acoustic Phonons in THz Quantum Cascade Lasers using Pico-Second Ultrasonics

    Chin. J. Phys. 49, 41 (2011)
  • A. Bruchhausen, R. Gebs, F. Hudert, D. Issenmann, G. Klatt, A. Bartels, O. Schecker, R. Waitz, A. Erbe, E. Scheer, J.-R. Huntzinger, A. Mlayah, and T. Dekorsy
    Subharmonic resonant optical excitation of confined acoustic modes in a free-standing semiconductor membrane at GHz frequencies with a high-repetition-rate femtosecond laser
    Phys. Rev. Lett. 106, 077401 (2011)


  • F. Hudert, A. Bruchhausen, D. Issenmann, O. Schecker, R. Waitz, A. Erbe, E. Scheer, T. Dekorsy, A. Mlayah, and J.-R. Huntzinger
    Confined longitudinal acoustic phonon modes in free-standing Si membranes coherently excited by femtosecond laser pulses
    Phys. Rev. B 79, 201307(R) (2009)