Siemens Lab at the University of Denver

We excite, measure, and control energy transport in nanomaterials with pulsed lasers

Research

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Publications

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People

Meet our research team

Recent research highlight: 2DCS of perovskite photovoltaics

We are studying electron transport and relaxation in perovskite thin films. We are particularly interested to use 2DCS to track the relaxation of “hot electrons” that are initially  excited far above the bandgap, and how this affects device performance. Our goal is to bridge traditional PV characterization and spectroscopy techniques and give new insight into the physics in these materials to enable further device performance improvements.

This work was recently funded by NSF (2019), and we are looking for graduate and postdoctoral researchers to join us!

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Recent research highlight: Vortex interactions in light

We are generating, controlling, and measuring topological fluids made purely of light. The transformative idea is to treat optical vortices, whirling phase singularities in the light field that have dark centers and quantized angular momentum, as interacting quasiparticles in an optical quantum fluid. We recently observed the emergence of quantum fluid behavior and interactions between densely-packed vortices in random light waves (i.e. laser speckle, Phys Rev Lett 122: 044301, 2019). These results suggest a world of emergent physics hidden beneath the linear optics that is thought to be so well-understood.

This work was recently funded by the W. M. Keck Foundation, and we are looking for graduate and postdoctoral researchers to join us!

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W. M. Keck Foundation

W. M. Keck Foundation, Science and Engineering Research Grant Program (2019)

Funding

National Science Foundation

Electronic and Photonic Materials (2019)
Biological Infrastructure, (MRI, 2019) 
Condensed Matter Physics (CAREER, 2016)
Thermal Transport Processes (2015)
Electronics, Photonics, & Magnetic Devices (2015)


Fulbright foundation

Fellowship to Argentina (2016)

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