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Plasmons in population inverted graphene can experience extremely large gain through the process of stimulated emission at terahertz frequencies. The large gain values and the small plasmon wavelengths can lead to compact terahertz plasmon lasers and amplifiers that are only a few microns in size. We present optical and terahertz spectroscopy results for carrier relaxation and recombination dynamics...
We measure the absorption spectrum of bovine serum albumin in aqueous solutions at terahertz frequencies using microfluidic channels. The data agrees well with previous results and demonstrates the feasibility of terahertz biosensing in microfluidic devices.
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