Wide frequency-tunable 1 THz resonant tunneling diode oscillator

The compact and high-performance resonant tunneling diode oscillator has great potential in terahertz applications. In this work, we report a 1 THz resonant tunneling diode (RTD) oscillator with wide frequency tuning range from 935 GHz to 1.035 THz (100 GHz) under the voltage change of 0.5-0.62 V within its negative differential conductance (NDC) range, which is due to the improvement of RTD heterojunction structure.