NIST researchers have developed a compact, low-cost infrared (IR) photon trap detector that can capture more than 99% of incident IR photons using a dual sensor system. The device, smaller than a golf ball, is designed for use in telecom and other applications requiring precise single-photon detection and counting.
The new IR trap detector extends measurement range beyond visible wavelengths and makes it easier to accurately characterize other detectors and light sources in the IR range. It should achieve uncertainties of 0.5% to 1%, compared to existing optical power meters with uncertainties between 2%-5%. The compact design allows for lower noise floor and higher maximum gain, enabling measurement of low power levels.
The technology could be widely used in quantum networks and other applications requiring high-accuracy single-photon detection and counting in the telecom band around 1310-1550 nm. The self-checking design minimizes the need for frequent recurring calibration, making it more accessible to a broader range of users.
Source: https://www.nist.gov/noac/technology/quantum-optics-and-radiometry/infrared-trap-detector
Keywords: Photon, Detector, Infrared, Uncertainty, Metrology
