A Superconducting Terahertz Flux-Flow Oscillator: Estimation of the Emission Power to Open Space
2021 Radiation and Scattering of Electromagnetic Waves (RSEMW)(2021)
摘要
In this paper, we calculate power of electromagnetic wave emitted to open space by a terahertz (THz) source based on a Josephson flux-flow oscillator (FFO). The FFO is integrated with a transmitting slot antenna and a superconductor-insulator-superconductor (SIS) tunnel junction on a single chip, providing a frequency-tunable signal in a wide range of 200 - 700 GHz to open space. For non-calibrated power measurements, we used a highly sensitive silicon bolometer at 4.2 K. A small part of output FFO power is branched to the on-chip SIS-mixer and was estimated by absolute value by means of the Tien and Gordon photon-assisted tunneling theory. Using the absolute value, a calibrated power emitted to open space was estimated in the whole operating range. A power of from fractions to a few μW was obtained with a maximum of about 3 μW at 330 GHz.
更多查看译文
关键词
terahertz oscillators,SIS junctions,silicon bolometer,emission power
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要