Photometry and spectrophotometry

Part of our Metrology Research Centre, the photometry and spectrophotometry team is responsible for the realization of the SI base unit of the candela and many of its associated derived units. They carry out research activities related to Raman metrology, optical radiation and optical spectroscopy measurements for sectors where high accuracy and traceability is critical in areas such as security and defence, advanced manufacturing and pharmaceuticals, among others.

Our expertise

The photometry and spectrometry team leads the development of Raman metrology to establish measurement infrastructure and reference standards for Raman spectroscopy. They also synthesize and characterize optically active nanomaterials and quantum materials.

• Photometry: Optical radiation measurements, photometric benches, lamp aging set-ups, spectral radiometers, integrating spheres and capabilities for solid-state lighting
• Spectrophotometry: Visible to IR spectral range supports spectral absorbance, reflectance, transmittance, gloss, colorimetry, fluorescence, BRDF and microspectrophotometry
• Raman spectroscopy and microscopy: Raman metrology, chemical sensors, quantum plasmonic sensors developments
• Visible, NIR, MIR, FIR FTIR spectroscopy and microscopy: Support for all infrared radiometry activities

Our latest research

The photometry and spectrophotometry team has developed chemical sensors based on plasmonic nanostructures. The team's surface-enhanced Raman scattering (SERS) sensors have been used in large-scale military field exercises for trace detection of narcotics such as opioids, hazardous chemicals, explosives, organophosphates and environmental toxins.

In addition, the team has developed new goniofluorescence measurement capabilities to disseminate traceable measurements of the total radiant factor of luminescent materials. This provides critical support to the Canadian and international pulp and paper and textile industries, including for next-generation smart textiles and prints.

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