© Doris Reiter

Abstand

Ultrafast Optics in Nanostructured Solids

Welcome to the research group Reiter

Our research group studies the theoretical modelling of dynamics on ultra short time and length scales. An introduction to our research can be found here. My CV and further information can be found in the research portal of the WWU Münster.

We have several collaborations within the WWU Münster, in particular with the AG Kuhn and the AG Bratschitsch, and with other theoretical and experimental groups from all over the world, e.g., with Martin Axt from Bayreuth, Germany, Ortwin Hess from London, UK, Jacek Kasprzak from Grenoble, France and Pawel Machnikowski from Wroclaw, Poland.

We are always happy to talk about our work. If you are interested in a bachelor or master thesis in our group, please contact us via E-Mail and make an appointment.

Doris Reiter
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News

New publication on dichroism induced by orbital angular momentum light

Communications Physics 1, 87 (2018)
© Doris Reiter

When light interacts with matter, the optical response can be dependent on the polarization state of the light. This effect is known as dichroism. When the light beam additionally carries an orbital angular momentum, the optical response can also strongly depend on the orbital angular momentum and induce a dichroism. In the paper we define orbital angular momentum induced dichroism and discuss its appearance using the example of stacked golden nanorods.

This work is a collaboration with Jamie Fitzgerald and Ortwin Hess from Imperial College London and Sang Soon Oh from Cardiff University.

Read more in the publication ...

Doris Reiter
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New publication on Thermal Phonon Lasing

Phys. Rev. A 98, 053855 (2018)
© Pawel Karwat

In a thermal occupation of quantum states the higher energy states are less occupied than the lower energy states. The opposite case refers to inversion and is the foundation to create lasing. This gives rise to the question, if a thermal gradient is able to create an inversion. In our paper we present a quantum system, where by using two energy filters an inversion in the middle quantum system emerges. This inversion can then be used to drive a phonon laser.

The work is a collaboration with Pawel Karwat from Wroclaw University of Science and Technology, Poland, and Ortwin Hess from Imperial College London.

Read more in the publication ...

Doris Reiter
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New publication in 'Physical Review B' on spatial control of carrier capture

Phys. Rev. B 98, 195411 (2018)
© Roberto Rosati

If a golf ball moves across the green and encounter the hole, it can fall into it. On the nanoscale electrons can undergo a similar process: When impinging on a potential with bound states, they may by captured inside the potential. The capture efficiency depends not only on the energy selection rules, but also on the spatial geometry of the problem. In the publication we show using the example of a quantum dot in a TMDC monolayer how the geometry can be varied to spatially control the capture

Read more in the publication ...

Doris Reiter
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Kevin Jürgens finishes Master Thesis

Semiconductor quantum dots in photonic structures: Influence of the electron-phonon interaction
© Kevin Jürgens

Congratulations to Kevin Jürgens who finished his master theses. Kevin studied quantum dots which are embedded in a photonic cavity. He analysed both the dynamics in the quantum dot as well as the dynamics of the electric field via the Maxwell equations. In addition he considered the influence of the phonons. In his thesis Kevin showed that a complex dynamics emerges in such systems. Kevin will continue his studies in the group of Prof. Kuhn during his PhD studies. We wish him all the best for his future!

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