past events

Thursday 23. May 2013

IMPRS get-together


Place: ECAP (Erwin-Rommel-Str. 1, Room TL 1.140)


Organisation: André Ritter (FAU / ECAP)

Talk: Energy resolved X-Ray Talbot-Lau Interferometry

Speaker: Georg Pelzer

Thursday 23. May 2013

Distinguished Lecturer Series



Prof. Elisabeth Giacobino (CNRS, École normale supérieure, Université Pierre et Marie Curie, Paris, France)


MPL / large seminar room (*435)



In a semiconductor system, optical excitations can create excitons, which are bound electron-hole pairs. In semiconductor nanostructures the excitonic energy levels are quantized, leading to a strong size dependence of their optical properties and allowing engineering of classical and non-classical light generation. Two cases will be described, one involving quantum wells with 1D quantization, the other one involving quantum dots, with 3D quantization.
When a quantum well is placed in a high finesse microcavity, the strong coupling regime between 2D excitons and light is reached, forming exciton-photon mixed quasi-particles called polaritons. Polaritons combine the coherent properties of photons with the highly interacting features of electronic states. These properties have allowed us to demonstrate nonlinear and quantum optical effects in the microcavity emission, as well as quantum fluid properties in the propagation of polaritons in the system. 
Quantum optical properties of quantum dots, or semiconductor nanocrystals, made of a few thousand atoms will also be described. Here, the strong confinement of electron-hole pairs leads to very interesting properties such as photon antibunching, opening the way to on-demand single photons sources at room temperature.


Monday 15. April 2013

Workshop: Spin-Orbit Interaction for Light and Matter Waves


Organisation: Max-Planck-Institut für Physik komplexer Systeme

Place: Dresden

More information:

Friday 08. March 2013

hbar OMEGA OSA Student Chapter
Field trip to Munich


Organisation: hbar OMEGA OSA Student Chapter Erlangen and SAOT

Guided tours at: 
Toptica Photonics ( and Menlo Systems (

Afterwards: social meeting at Augustiner Keller

Registration: email to Christian Müller (MPL)

Deadline for registration: Friday, March 1

More information: poster

Thursday 28. February 2013

IMPRS get-together


Place: MPL (large seminar room)

Organisation: Martin Finger (MPL / Russell Division)

Talk: Propagation of magnetic dipole waves on arrays of dielectric particles

Speaker: Dr. Oleksandr Zhuromskyy (MPL Erlangen / Research group: Nonlinear Optics and Nanophotonics NONA)


Regular arrays of high dielectric constant particles can support dipole waves, resulting from couplings between the particle's electromagnetic oscillation modes. T-matrix formalism is a powerful tool allowing to study excitation, propagation and extraction of light from such particle waveguides. The knowledge of the wave dispersion properties is essential for the construction of the perfect matching load, which provides for the complete suppression of the back reflections from the waveguide's ends. In the case of technologically simpler single particle power absorbers (consumers), field distributions obtained from the T-matrix simulations can be used to optimize the efficiency of power throughput.

Thursday 31. January 2013

IMPRS get-together (Kopie 25)


Place: MPL (large seminar room

Organisation: Georg Epple (MPL / Russell Division)

Talk: Ultralong-range Rydberg molecules

Speaker: Dr. Robert Löw (University of Stuttgart)


Ultralong-range Rydberg molecules are bound states of a Rydberg atom with ground state atoms. In this talk first the physical foundations of these molecules and the experimental requirements for their production are introduced. Afterwards a set of experiments dedicated to the coherence times of the molecules is presented. In the end the polarizabilty of the Rydberg-molecules and how a homonuclear molecule can produce a permanent dipole moment is discussed.


Thursday 24. January 2013

MPL Distinguished Lecturer Series (Kopie 3)


Prof. Andreas Tünnermann (Fraunhofer Institute for Applied Optics and Precision Engineering, Friedrich Schiller University Jena, Institute of Applied Physics)


MPL / large seminar room (*435)


Humanity faces today multitude of challenges as energy consumption and climate change, healthcare in an ageing society, the knowledge society and public safety and security. The sustainable use of light “Green Photonics” can contribute to solve these pressing future issues.

Essential operation fields are

  • alternative methods of energy conversion
  • decreasing of energy consumption and efficient use of natural resources
  • conservation of climate and environment
  • Food protection and health care.

Green Photonics brings together the various application possibilities of light for protecting the environment and healthy living. These include optical and optoelectronic technologies which save energy, reduce emissions from greenhouse gases, avoid polluting the environment, or contribute to environmentally compatible and sustainable production. The use of resource and environmentally friendly, i.e. “green” optical technologies holds enormous economic potential, ranging from efficient lasers via optical metrology and sensor technology to power-saving lighting and effective CO2-neutral energy conversion.

A great amount of energy could be saved in the area of lighting. Today, around 20 percent of the total demand for electricity around the world is used for lighting purposes. Around 50 percent of this could be saved by using more efficient light sources, corresponding to the total electrical energy requirements of Western Europe and a CO2 equivalent of 600 million tons. In the field of resource-friendly power generation, photovoltaics and solar-thermal energy are increasing in importance. The aim here must be to continue increasing efficiency while simultaneously reducing costs with new concepts and alternative technologies. “Green Photonics” also play an important role in the development of sustainable and energy-efficient production processes, for example in laser welding or the manufacture of vehicle components in the automotive industry. In this regard, ultrashort-pulse fiber lasers which can be used highly efficiently in micro-material processing are particularly promising. The field of information and communication consumes two to three percent of world energy requirements today, and this power consumption is increasing by up to 20 percent a year in the light of rapidly rising data traffic. Here too, considerable energy savings could be achieved with improved optical networks. In climate research, optical sensors in satellite-aided earth observation systems help in detecting pollutants in the air or sea, early recognition of environmental disasters, and the development of countermeasures.

In this contribution, novel developments in the sustainable use of light are reviewed and perspectives of Green Photonics discussed. 

Tuesday 11. December 2012

IMPRS get-together (Kopie 24)


Place: ECAP (Erwin-Rommel-Str. 1), room 307

Organisation: Mykhaylo Filipenko (ECAP)

Talk: Neutrino-oscillations and the Double Chooz Experiment

Speaker: Nils Haag (Technical University, Munich)

Thursday 06. December 2012

MPL Distinguished Lecturer Series

Time: 3 pm

Place: MPL / large seminar room (*435)

Title: Coherent Back Scattering and Anderson Localization of Ultra Cold Atoms

Speaker: Prof. Alain Aspect (Institut d'Optique, Palaiseau/France)


We use ultra cold atoms in a disordered potential created with a laser speckle, to study Anderson Localization (AL) and Coherent Back Scattering (CBS). Localization has been observed in 1D and 3D, and 2D experiments are promising. Theory supports the conclusion that what we observe is AL, but a direct evidence of the role of coherence is desirable.Recently, we have observed CBS, an indisputable coherent effect in quantum transport, related to the first order manifestation of localization (weak localization).

Wednesday 28. November 2012

IMPRS Interview Days (Kopie 3)

IMPRS Interviews 2012-2

Interviews scheduled for November 27th and 28th (14:00-17:30)

Guided tour through IMPRS partner institutions planned for November 26th