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We present experimental results on the Terahertz radiation from high electron mobility transistors at room temperature, which clearly show the tunability of the emission frequency by the gate voltage.
We evaluate the optical performance of AlGaN/GaN MISFETs as a non-resonant sub-terahertz, room temperature detector. The single-pixel responsivity and the noise equivalent power are determined. The efficiency of the detection is demonstrated by the room temperature imaging of different solutions of acetone in cyclohexane.
We review a few recent results concerning the physics and applications of Field Effect Transistors ( FETs) as Terahertz detectors and emitters. Particularly we stress results concerning dependance of THz detection and emission on high/quantizing magnetic fields and the geometry of the transistor channel.
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