MBI Staff Member – Personal info
Dr. Michael Woerner
michael.woerner(at)mbi-berlin.de
+49 30 6392 1470
C3: Femtosecond Spectroscopy of Solids
Building C, 1.2
Position
- Head of Department C3 "Femtosecond Spectroscopy on Solids"
- Coordinator of Project 3.2 "Solids and Nanostructures: Electrons, Spins, and Phonons"
- Coordinator of Project 3.3 "Transient Structures and Imaging with X-rays"
Research
I am interested in ultrafast and nonlinear phenomena in condensed matter, in particular organic and inorganic solids and nanostructures. To this end, I generate and apply ultrashort pulses in a wide spectral range (THz to hard x-ray) to measure the nonequilibrium dynamics of elementary excitations in solids and the ultrafast structural dynamics of crystalline material. Most recent activities are two-dimensional spectroscopy in the THz frequency range (Figure: two phonon coherences in InSb) and femtosecond x-ray absorption experiments using table top high harmonic sources.
Curriculum vitae
1981-1988 Study of physics at the Technical University (TU) of Munich
1988-1991 PhD Work at TU Munich, Physics Department E11 (Prof. W. Kaiser)
1991 Graduation (Dr. rer. nat.) at the TU
1991-1993 Postdoctoral Researcher at the Physics Department E11, TU Munich
1993-1996 Postdoctoral Researcher at the Max-Born-Institute, Berlin
1997 Postdoctoral Researcher at Bell Laboratories (Lucent), Holmdel, NJ, USA
since 1997 Department head of C3 at the Max-Born-Institute, Berlin
1999 Habilitation at the Humboldt University Berlin
Recent highlight(s)
Electric polarization in the macroscopic world and electrons moving at atomic scales
Wiggling atoms switch the electric polarization of crystals
Quantum Swing - a pendulum that moves forward and backwards at the same time
Amplification of Sound Waves at Extreme Frequencies
Hot means slow: Electron plasma oscillations tuned down with light
The longer the better: Optical long-wavelength pulses generate brilliant ultrashort hard x-ray flashes
MBI Publications
- Femtosecond infrared spectroscopy of semiconductors and semiconductors nanostructures Phys. Reports 321 (1999) 253-305
- Femtosecond infrared pulses tunable from 9 to 18 mm at 88 MHz repetition rate Opt. Lett. 23 (1998) 861-863
- Generation of high repetition rate femtosecond infrared pulses tunable from 9 to 18 µm Ultrafast Phenomena XI, T. Elsaesser, D. Wiersma, J. Fujimoto, W. Zinth (Eds), Springer Verlag Berlin (1998) 66-68
- Ultrafast dephasing of coherent intersubband polarizations in quasi-two-dimensional electron plasma Phys. Rev. Lett. 80 (1998) 3575-3578
- Ultrafast coherent dynamics of impulsively excited inter-valence band polarizations in bulk GaAs in: Radiative Processes and Dephasing in Semiconductors, D. Citrin (Ed.), OSA Trends in Optics and Photonics Series (TOPS) 18 (1998) 80-85
- Coherent inter-valence band polarizations in bulk GaAs studied on a sub-100 fs time scale Phys. Stat. Sol. (b) 206 (1998) 299-305
- Ultrafast pump-pobe signals at the band edge of bulk GaAs: excitonic versus free carrier contributions Ultrafast Phenomena XI, T. Elsaesser, D. Wiersma, J. Fujimoto, W. Zinth (Eds), Springer Verlag Berlin (1998) 257-259
- Excitonic and free-carrier quantum beats created by femtosecond excitation at the band edge of GaAs Phys. Rev. B 58 (1998) 10470-10474
- Ultrafast coherent and incoherent dynamics of intersubband excitations in quasi-two-dimensional semiconductors SPIE Proceedings Series 3277 (1998) 2-9
- Femtosecond mid-infrared spectroscopy of nonequlibrium excitations in YBa2Cu3O7-d Ultrafast Phenomena XI, T. Elsaesser, D. Wiersma, J. Fujimoto, W. Zinth (Eds), Springer Verlag Berlin (1998) 368-370