Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-09-02
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Under review in Phys. Rev. B
Scientific paper
Experimental results of direct measurement of resonant monochromatic terahertz emission optically excited in InGaAs transistor channels are presented. The emission is attributed to two-dimensional plasma waves excited by photogeneration of electron-hole pairs in the channel at the frequency $f_0$ of the beating of two cw-laser sources. The presence of resonances for the radiation emission in the range of $f_0\pm 10$ GHz (with $f_0$ from 0.3 up to 0.5 THz) detected by a Si-bolometer is found. Numerical results support that such a high quality of the emission resonances can be explained by the approach of an instability in the transistor channel.
Gruzinskis V.
Laurent Thomas
Marinchio H.
Nouvel P.
Palermo C.
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