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Observation of amplified stimulated terahertz emission in optically pumped epitaxial graphene heterostructures

By: Satou, A.; Ryzhii, M.; Otsuji, T.; Watanabe, T.; Karasawa, H.; Ryzhii, V.;

2010 / IEEE / 978-1-55752-890-2

Description

This item was taken from the IEEE Conference ' Observation of amplified stimulated terahertz emission in optically pumped epitaxial graphene heterostructures ' We experimentally observed the fast relaxation and relatively slow recombination dynamics of photogenerated electrons/holes in an epitaxial graphene-on-Si heterostructure. The result is interpreted as an amplified stimulated THz emission and well supports the occurrence of negative dynamic conductivity in the terahertz spectral ranges.