Projects from Prof. Dr. Donat Josef As
TRR 142 - Tailored ultrafast acoustics for light emission modulation (A06)
The interaction of coherent acoustic phonons and excitons in low-dimensional semiconductor structures is in the focus of this project proposal. In the experiments, picosecond strain pulses are sent through the nanostructure. The response on the ultrafast acoustic impact is monitored through the light emission and tailored by nanoscale adjustment of ...
Duration: 04/2014 - 12/2025
Funded by: DFG
TRR 142 - Nonlinear optics and coherent intersubband physics of cubic GaN/Al(Ga)N heterostructures (B02)
Project B02 continues with the fabrication of cubic GaN/Al(Ga)N heterostructures and the investigation of their ultrafast and/or nonlinear optical properties. In the second period, we aim to enlarge and utilize the resonant nonlinearity associated with near-infrared intersubband transitions in quantum wells. This will be achieved by stronger doping ...
Duration: 04/2014 - 03/2021
Funded by: DFG
Transregional Collaborative Research Center TRR 142 - Tailored Nonlinear Photonics: From Fundamental Concepts to Functional Structures
The central goal of this CRC is the exploration, development, and engineering of future nonlinear photonics, which uses state-of-the-art technological capabilities for the exploration of new physics and devices based on tailored strong nonlinearities and genuine quantum effects. Our research harnesses tailored solid-state systems and bridges the ...
Duration: 04/2014 - 12/2025
Funded by: DFG
RTG 1464: Micro- and Nanostructures in Optoelectronics and Photonics
Optoelectronics and photonics are key technologies of the 21st century that provide products for many areas of life, including communication, traffic, medicine, culture and entertainment. While communication via optical fibers is pretty established, products like liquid crystal displays or semiconductor laser diodes are currently subject of a ...
Duration: 01/2008 - 12/2017
Funded by: DFG
Defect complexes in GaN - Preparation, characterisation and ab-initio modelling
Duration: 01/2008 - 12/2012
Funded by: DFG