Optically probed multi-element electric field sensing system

A system comprising:

• a light source module configured to emit light;
• a plurality of electric field sensors, each sensor comprising a light input portion configured to receive light emitted from the light source module and a light output portion configured to output light in response to the received light, each sensor comprising an electro-optic material arranged in a path of at least some of the received light, an optical property of the electro-optic material being variable depending on a local electric field strength at the sensor, and the electro-optic material being arranged in the sensor such that a property of the output light varies depending on the local electric field strength;
• a light detection module arranged to receive the output light from the sensors;
• and
• a processing module in communication with the light detection module, the processing module being programmed to determine a corresponding value for the electric field strength local to each of the sensors based on the detected output light from each respective sensor,
• wherein the light emitted by the light source module comprises a plurality of wavelengths,
• wherein the plurality of electric field sensors comprises a plurality of retroreflectors configured to retroreflect the light received by the plurality of electric field sensors, the plurality of electric field sensors each having a respective resonant wavelength which vary depending on the electric field strength local to the respective electric field sensor,
• wherein the retroreflector is a cube corner retroreflector, and
• wherein the electro-optic material is integrated with the cube corner to form a reflective surface of the cube corner.

A system comprising:

• a light source module configured to emit light;
• a plurality of electric field sensors, each sensor comprising a light input portion configured to receive light emitted from the light source module and a light output portion configured to output light in response to the received light, each sensor comprising an electro-optic material arranged in a path of at least some of the received light, an optical property of the electro-optic material being variable depending on a local electric field strength at the sensor, and the electro-optic material being arranged in the sensor such that a property of the output light varies depending on the local electric field strength;
• a light detection module arranged to receive the output light from the sensors;
• and
• a processing module in communication with the light detection module, the processing module being programmed to determine a corresponding value for the electric field strength local to each of the sensors based on the detected output light from each respective sensor,
• wherein the light emitted by the light source module comprises a pump wavelength and a plurality of probe wavelengths, the plurality of electric field sensors being responsive to one or more corresponding wavelengths of the plurality of probe wavelengths,
• wherein each of the plurality of electric field sensors comprises an optical gain medium arranged in a path of at least some of the received light, the optical gain medium having an optical gain that vary depending on an amount of received pump light, and
• wherein the electro-optic material is configured to transmit a variable portion of the pump wavelength to the optical gain medium depending on the electric field strength local to the respective electric field sensor, such that respective intensity of the output probe wavelengths are modified by the optical gain of the respective optical gain medium.