Refined treatment of single-edge diffraction effects in radiometry

Area of Science:

• Physics
• Optical Engineering
• Radiometry

Background:

• Diffraction effects are crucial in radiometry, particularly for precise measurements.
• Accurate modeling of diffraction is complex, especially for extended sources and across broad wavelength ranges.

Purpose of the Study:

• To develop a simplified and accelerated method for calculating diffraction corrections in radiometry.
• To improve the treatment of diffraction effects for both point and extended sources in cylindrically symmetrical systems.
• To enhance accuracy in spectral and total power measurements, particularly in the short-wavelength region.

Main Methods:

• Developing simpler asymptotic expansions for diffraction effects.
• Implementing a framework for accelerated calculations of extended sources.
• Analyzing diffraction effects for Planck sources across various wavelengths.

Main Results:

• A more accessible rendering of leading terms in asymptotic expansions for diffraction.
• A demonstrated framework that accelerates the treatment of extended sources.
• Reliable estimates for the remainders in diffraction calculations, improving accuracy.

Conclusions:

• The presented methodology simplifies and accelerates diffraction correction calculations in radiometry.
• The framework is effective for both point and extended sources, offering improved accuracy.
• This work has direct applications in radiometric measurements, especially in the critical short-wavelength domain.