Optical properties of materials and products
Knowledge of the optical properties is crucial in many industrial and scientific applications such as contactless temperature measurement, modelling, heat transfer, laser technology, optics (mirrors, lenses and optical windows), energy, construction, photovoltaic industry, the aerospace industry and many others.
Our laboratory is focused on a precise analysis of a wide range of optical properties of both laboratory and industrial samples in the wavelength range from ultraviolet to infrared range of radiation under ambient and high temperatures. Analysis of the optical properties is carried out both for external bodies and internal use in the development of laser materials processing technologies and development of infrared thermography methods.
Description of properties
Optical properties characterize the response of materials to incident electromagnetic radiation. For each material, the incident radiation is partially transmitted, partially reflected and partially absorbed. Optical properties that define the material response to the incident radiation can be described as transmissivity, reflectivity and absorptivity.
Every solid material emits a thermal (infrared) radiation. The relative ability of the material to emit radiation is known as emissivity (emittance).
Optical properties generally depend on:
- Incident radiation
- wavelength, the direction of incidence and polarization
- the type of material, chemical composition, structure, surface state and temperature