Terahertz spectroscopy of quantum wells.
A collaboration between physicists in Japan and Germany applied terahertz emission spectroscopy to understand the 3D dynamics in quantum wells. Their non-contact, non-destructive method can be applied to assessing the ultrafast carrier dynamics, strain physics, phonon dynamics, and ultrafast dielectric responses at the local level in new materials.
Their work can be found in Advanced Optical Materials: https://onlinelibrary.wiley.com/doi/10.1002/adom.202100258
#sciencenews #THz #spectroscopy #SmartMaterials
A collaboration between physicists in Japan and Germany applied terahertz emission spectroscopy to understand the 3D dynamics in quantum wells. Their non-contact, non-destructive method can be applied to assessing the ultrafast carrier dynamics, strain physics, phonon dynamics, and ultrafast dielectric responses at the local level in new materials.
Their work can be found in Advanced Optical Materials: https://onlinelibrary.wiley.com/doi/10.1002/adom.202100258
#sciencenews #THz #spectroscopy #SmartMaterials
Wiley Online Library
Ultrafast Terahertz Nanoseismology of GaInN/GaN Multiple Quantum Wells
Ultrafast terahertz (THz) emission from laser-excited Ga0.8In0.2N/GaN multiple quantum wells (MQWs) consists of three distinct, differently timed signals. They originate from i) laser-induced dynamic...
Improving optical fiberss.
Distortions in the signals passed through optical fibers are a massive challenge for modern communications infrastructure. University of Rochester researchers have devised a novel technique where pre-shaping the wave front and polarization of the optical signal reduces distortions during transmission.
The results can be viewed in Nature Communications: https://www.nature.com/articles/s41467-021-22071-w
#sciencenews #optics #physics #smartmaterials
Distortions in the signals passed through optical fibers are a massive challenge for modern communications infrastructure. University of Rochester researchers have devised a novel technique where pre-shaping the wave front and polarization of the optical signal reduces distortions during transmission.
The results can be viewed in Nature Communications: https://www.nature.com/articles/s41467-021-22071-w
#sciencenews #optics #physics #smartmaterials
Nature
High-fidelity spatial mode transmission through a 1-km-long multimode fiber via vectorial time reversal
Nature Communications - The use of long multimode fibers for multiplexed quantum communication is hindered by modal crosstalk and polarisation mixing. Here, the authors use an auxiliary laser beam...