Photonics is the technology of light. It comprises the generation, emission, transmission, modulation, signal processing, switching, amplification, detection and sensing of light. It covers all applications of light over the whole spectrum from ultraviolet over the visible to the mid- and far-infrared.
The Photonics Institute focuses its research on the generation of ultrashort high intensity laser pulses, generation of THz pulses and realization of nano-photonic devices as well as their applications. The Photonics Institute is also teaching the full spectrum of photonics in the TU Wien Bachelor's and Master's Programmes.
Ultrashort light pulses are an indispensible tool for the observation of very fast processes such as electron dynamics in semiconductors or the formation of chemical bonds. Laser pulses can be made as short a single cycle of the optical electromagnetic field, or about a femtosecond. The TU Photonics Institute is among the leading labs to produce such pulses that allow studying matter under extremely high electric fields, resulting in novel plasma effects including coherent X ray generation, MeV particle acceleration, as well as non-thermal materials processing and other plasma applications.

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Integrated Metallic Hollow Waveguides with Terahertz Quantum Cascade Lasers

Marie C. Ertl, Dominik Schock, Anna Invernici, Miriam Giparakis, Michael Jaidl, Aaron M. Andrews, Juraj Darmo & Karl Unterrainer 
Springer Naturer, Journal of Infrared, Millimeter and Terahertz Waves, Volume 47, article number 3 (2026)

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Probing Optical Magnetic Dipole Transitions in Eu3+ Using Structured Light and Nanoscale Sample Engineering

Elizaveta Gangrskaia, Thomas Schachinger, Christoph Eisenmenger-Sittner, Lorenz Grünewald, Sebastian Mai, Andrius Baltuška, Audrius Pugžlys and Alessandra Bellissimo
ACS Photonics, Vol 12, Issue 11 (2025)

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Tunable comb operation in terahertz quantum cascade ring lasers

Michael Jaidl, Dominik Theiner, Florian Pilat, Aaron M. Andrews, Rahul Yadav, Gottfried Strasser, Benedikt Schwarz, Sascha Preu, Juraj Darmo, and Karl Unterrainer
Optics Express, Vol. 33, Issue 21, pp. 44042-44050 (2025)