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We report on a dual-pass high current density resonant tunneling diode (RTD) for terahertz wave applications. This technique reduces the overall fabrication complexity and improves the reproducibility for creating low resistance ohmic contacts. With our dual-pass technique, we demonstrate accurate control over the final device area by measuring the RTD current–voltage characteristic during the fabrication...
We discuss the numerical simulation of high current density InGaAs/AlAs/InP resonant tunneling diodes with a view to their optimization for application as THz emitters. We introduce a figure of merit based upon the ratio of maximum extractable THz power and the electrical power developed in the chip. The aim being to develop high efficiency emitters as output power is presently limited by catastrophic...
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