NIST has developed a new SI-traceable Rydberg atom radiofrequency power meter that can accurately measure the power of reference radiofrequency radiation. The device uses a reference radiofrequency source to provide a stable reference point for measurements. It contains a vapor cell with parallel-plate waveguides that receive gas atoms and reference radiofrequency radiation, producing output light in response to the radiation.
The power of the reference radiofrequency radiation is determined by measuring the electromagnetically induced transparency of the gas atoms in a Rydberg electronic state. The device’s transmission detector receives the output light and produces a transmission signal, which is used to calculate the power of the radiation. This method is traceable to the International System of Units (SI), ensuring accurate and reliable measurements.
The new power meter is a valuable tool for researchers and engineers working in the field of radiofrequency power measurement, providing a reliable and accurate means of determining the power of reference radiofrequency radiation. Its design and operation are based on a thorough understanding of quantum mechanics and the properties of Rydberg atoms, making it a sophisticated and advanced device.
Keywords: Rydberg, Radiofrequency, Electromagnetically, Transparency, Quantum
