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...
Rotating terahertz polarisation.
Rice University physicists have demonstrated the ability of ultrathin, highly-aligned carbon nanotube films to efficiently rotate the polarisation vector of terahertz waves. They suggest that the thin films are ideal for making compact wave plates with reduced dimensions.
Learn about their work in Optica: https://www.osapublishing.org/optica/viewmedia.cfm?uri=optica-8-5-760&html=true
#sciencenews #THz
Rice University physicists have demonstrated the ability of ultrathin, highly-aligned carbon nanotube films to efficiently rotate the polarisation vector of terahertz waves. They suggest that the thin films are ideal for making compact wave plates with reduced dimensions.
Learn about their work in Optica: https://www.osapublishing.org/optica/viewmedia.cfm?uri=optica-8-5-760&html=true
#sciencenews #THz
www.osapublishing.org
Giant terahertz polarization rotation in ultrathin films of aligned carbon nanotubes
For easy manipulation of polarization states of light for applications in communications, imaging, and information processing, an efficient mechanism is desired for rotating light polarization with a minimum interaction length. Here, we report giant polarization…