The metrological fields of photometry and radiometry and their associated units are closely
linked through the current definition of the base unit of luminous intensity—the candela …

Well characterised sources of thermal radiation are essential for photometry, radiometry, and
thermometry. They serve as reference radiators for the calibration of detectors and radiance …

At present, ultraviolet sensors are utilized in numerous fields ranging from various
spectroscopy applications via biotechnical innovations to industrial process control. Despite …

The design and construction of a predictable quantum efficient detector (PQED), suggested
to be capable of measuring optical power with a relative uncertainty of 1 ppm (ppm= parts …

The predictable quantum efficient detector (PQED) is intended to become a new primary
standard for radiant power measurements in the wavelength range from 400 nm to 800 nm …

Single‐photon sources (SPSs) based on quantum emitters hold promise in quantum
radiometry as metrology standard for photon fluxes at the low light level. Ideally this requires …

Femtosecond laser micromilling of silicon is investigated using a regeneratively amplified
775nm Ti: Sapphire laser with a pulse duration of 150fs operating at 1kHz repetition rate …

The metrology institute in Germany, the Physikalisch-Technische Bundesanstalt (PTB),
calibrates the spectral responsivity of THz detectors at 2.52 THz traceable to International …

SOLAR is a set of three solar instruments measuring the total and spectral absolute
irradiance from 16 nm to 3080 nm for solar, atmospheric and climatology physics. It is an …

Chromophore-based fluorescence standards for the characterization of photo-luminescence
measuring systems and the determination of relevant fluorometric quantities are classified …