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Fall 2021
Terahertz (THz) radiation is a non-ionizing form of electromagnetic (EM) energy that occupies a broad frequency region at the interface between conventional microwave and infrared bands. The strong coupling between THz excitations and natural oscillatory dynamics in biological systems has...
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Fall 2023
Laser-induced breakdown spectroscopy (LIBS) is a method of material analysis used to determine the composition of a sample by ablating it with an ultrafast laser pulse. By monitoring the light emission from the resulting plasma, the elemental composition of the sample and the concentration of...
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Terahertz scanning tunneling microscopy on metals, semiconductors, and carbon nanostructures
DownloadSpring 2024
Marin Calzada, Jesus Alejandro
Scanning probe microscopes routinely provide atomic resolution of numerous materials, but lack the tools to investigate their ultrafast dynamics. Laser pulses can be generated in the femtosecond or even attosecond regime, but their spatial application is restricted by the diffraction limit....
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Fall 2021
Ultrafast terahertz (THz) spectroscopy is presently the most powerful tool available to materials scientists for directly probing ultrafast conductivity dynamics. Its low center frequency and phase-resolved measurement, which yields sub-picosecond temporal resolution, make it ideally suited for...