This article presents a collection of research papers and developments in various areas of optical metrology and radiometry, highlighting advancements in measurement techniques, calibration methods, and new measurement devices. Key points include:
1. Pyroelectric detector-based calibration methods for short-wave infrared (SWIR) measurements with low uncertainty
2. Realization of the ultraviolet spectral responsivity scale using laser-driven plasma light sources
3. Validation of a compact radiation pressure power meter for high-accuracy laser power measurements
4. Key comparison measurements of spectral diffuse reflectance using gonioreflectometers
5. Effects of nitrogen flow on trap detector responsivity and methods to minimize it
6. Performance evaluation of thermoelectrically-cooled SiC single photon avalanche photodiodes
7. Packaging of silicon photodiodes for use as electrical substitution radiometers
8. Algorithms to reduce multi-band sensor measurement errors due to out-of-band response
9. On-site measurements of reflection characteristics of dry asphalt roads
10. Development and evaluation of a mid-IR spectrometer for remote sensing applications
11. Angular responsivity measurements of direct solar irradiance radiometers for satellites
12. Establishment of a single-photon detector efficiency calibration system at NRC Canada
13. Improvements to NIST’s Reference Transmittance Spectrophotometer (RTS) in the UV and visible range
14. Characterization of high irradiance level 254 nm UV sources for UVMeter calibration
15. Design and evaluation of an extremely low reflectance measurement device
16. Optical frequency metrology based on photon counting
17. Intercomparison of indoor and outdoor spectral irradiance measurements between INTI and INMETRO
18. Recommendations for finite intervals in BRDF measurements of glossy samples
19. Advancements in NRC’s primary spectral irradiance scale realization
20. Study of systematic errors in the IEC method for PLQE measurements and suggested corrections
These developments demonstrate ongoing progress in optical metrology, with applications in various fields including quantum technologies, remote sensing, solar energy, and material characterization.
Keywords: Pyroelectric detectors, Spectral responsivity, Radiometric calibration
