A radiometric method has been developed, suitable for both total power and flux density profile measurement of concentrated solar radiation. The high-flux density radiation is collected by a first optical cavity, integrated, and driven to a second optical cavity, where, attenuated, it is measured by a conventional radiometer operating under a stationary irradiation regime. The attenuation factor is regulated by properly selecting the aperture areas in the two cavities. The radiometer has been calibrated by a pulsed solar simulator at concentration levels of hundreds of suns. An optical model and a ray-tracing study have also been developed and validated, by which the potentialities of the radiometer have been largely explored. © 2007 Optical Society of America.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
Parretta, A., Antonini, A., Armani, M., Nenna, G., Flaminio, G., & Pellegrino, M. (2007). Double-cavity radiometer for high-flux density solar radiation measurements. Applied Optics, 46(12), 2166 - 2179. https://doi.org/10.1364/AO.46.002166