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The single-shot interferometric imaging of normal mode dynamics in MEMS resonators, oscillating in the radio frequency (rf) regime, is demonstrated by synchronous imaging with a pulsed nanosecond laser. Profiles of mechanical modes in suspended silicon and graphene thin-film structures, and their extracted equilibrium profiles, are measured through nondestructive all-optical Fabry-Perot reflectance...
THz imaging and spectroscopy using broadband THz pulses map out the THz carrier dynamics of a large-area graphene-on-Si sample, showing that the local sheet-conductivity varies across the sample from σs, = 1.7×10−3 to 2.4×10−3 Ω−1.
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