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
- Stimulated Raman scattering of superlumininal femtosecond Bessel pulses Opt. Commun. 154 (1998) 186-190
- Ultrafast heating and cooling of electron plasmas in GaInAs/AlInAs quantum wells after intersubband excitation Sol. State Commun. 106 (1998) 425-429
- Femtosecond dynamics and coherence properties of resonant secondary emission from excitons in GaAs quantum wells Ultrafast Phenomena XI, T. Elsaesser, D. Wiersma, J. Fujimoto, W. Zinth (Eds), Springer Verlag Berlin (1998) 227-229
- Resonant secondary emission from two-dimensional excitons: Femtosecond time evolution of the coherence properties Phys. Rev. Lett. 81 (1998) 4208-4211
- Femtosecond dynamics of resonant secondary emission from GaAs quantum wells in: Radiative Processes and Dephasing in Semiconductors, D. Citrin (Ed.), OSA Trends in Optics and Photonics Series (TOPS) 18 (1998) 20-23
- Ultrafast dynamics of nonlinear intersubband absorption in n-type modulation doped GaInAs/AlInAs quantum wells Phys. Stat. Sol. (b) 204 (1997) 212-214
- Coherent intersubband polarizations in a quasi-two-dimensional electron plasma studied by femtosecond four-wave-mixing in the mid-infrared Phys. Stat. Sol (b) 204 (1997) 27-30
- Ultrafast dynamics of coherent inter-valence band polarization in bulk GaAs studied with 20 fs pulses Phys. Stat. Sol. (b) 204 (1997) 23-26
- Heavy-light hole quantum beats in the band-to-band continuum of GaAs observed in 20 femtosecond pump-probe experiments Phys. Rev. Lett. 78 (1997) 737-740
- Intervalence band absorption in the AlGaAs miror layers of long-wavelength vertical cavity lasers OSA Trends in Optics & Photonics (TOPS) 15 (1997) 118