7 November 1983 Considerations On Wavelength Scaling For Optical Systems
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Proceedings Volume 0380, Los Alamos Conf on Optics '83; (1983) https://doi.org/10.1117/12.934808
Event: Los Alamos Conference on Optics, 1983, New Mexico, United States
Abstract
Normally when one considers the intensity in the far field and how it scales with wavelength, a very quick and superficially simple answer is reached. Namely, the answer is that far field intensity scales inversely as wavelength squared, i.e., I(λ1)/I(λ2) = (λ2/λ1)2. Unfortunately, this relationship is only true for what is called the "on-axis intensity" of the central diffraction lobe. In most cases the interest is not to deliver a central intensity to the far field, but to deliver a maximum amount of power within a defined spot size in the far field. This spot size is normally defined to be within the first zero of the Airy pattern, or the exp (-2) point on a Gaussian intensity distribution. The purpose of this article is to examine how the far field average irradiance rather than on-axis intensity scales with wavelength, and how simple aberrations affect such average irradiance.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Petras V. Avizonis, Petras V. Avizonis, } "Considerations On Wavelength Scaling For Optical Systems", Proc. SPIE 0380, Los Alamos Conf on Optics '83, (7 November 1983); doi: 10.1117/12.934808; https://doi.org/10.1117/12.934808
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