New Metrology Technique Measures Electric Fields | AIP Publishing

Photo of the first fiber-coupled vapor-cell for electrical field measurements. The fiber-coupled sensor head (i.e., the vapor cell) can be moved off the optical table for ease of operation, which is useful in field-strength measurements, and for near-field and sub-wavelength imaging applications. Credit: NIST

WASHINGTON, D.C., June 20, 2017 — In the last decades, mobile phones and other wireless devices have become central features of life around the globe. These devices radiate varied amounts of electromagnetic energy and thus project electric fields into the surrounding space. It is crucial to the design and deployment of these devices that they have accurate and traceable measurements for electric fields and radiated power. Until recently, however, it was not possible to build self-calibrating probes that could generate independent and absolute measurements of these electric field values.

Source: New Metrology Technique Measures Electric Fields | AIP Publishing