Résumé
The applied photometry and radiometry emphasizes original methods and techniques for measurements of parameters and characteristics of optical radiation, and the underlying principles of photometry and radiometry for observation and registration of power and energy extents of light and its visual perception, and for determination of optical properties of bodies and mediums in direct, diffuse, and scattered radiation, propagating via solid-state and liquid specimen, gas species, birefringent substances, optical fibers, and planar waveguides The analysis and presentation of the material is organized from the standpoint of fundamental properties of optical radiation, such as spectral coherence, observability, and energy transfer, to very practical considerations of designing and building optical systems, elements and devices for the optical measurements, alongside with latest results of experiments and cross-method comparisons in white light and in spectrally resolved, cw, pulsed, polarized, spontaneous and partially- coherent laser radiation The material focuses on the principal methodologies for optical loss measurements, including in-depth analysis of the founding concepts and the measurement drawbacks, extending to the comparison of laser interference noise reduction techniques in a variety of applications, as well as applying diffraction corrections and studying the wavelength dispersion or verifying the photometric accuracy Applied Photometry, Radiometry, and Measurements of Optical Losses reviews and analyzes physical concepts of radiation transfer, providing quantitative foundation for the means of measurements of optical losses, which affect propagation and distribution of light waves in various media and in diverse optical systems and components. The comprehensive analysis of advanced methodologies for low-loss detection is outlined in comparison with the classic photometric and radiometric observations, having a broad range of techniques examined and summarized: from interferometric and calorimetric, resonator and polarization, phase-shift and ring-down decay, wavelength and frequency modulation to pulse separation and resonant, acousto-optic and emissive - subsequently compared to direct and balancing methods for studying free-space and polarization optics, fibers and waveguides. The material is focused on applying optical methods and procedures for evaluation of transparent, reflecting, scattering, absorbing, and aggregated objects, and for determination of power and energy parameters of radiation and color properties of light.