On problem of the rigorous diffraction quantitative description

Abstract

New data showing an inaccuracy of Kirchhoff's description for the diffraction of the limited aperture light beams are presented. A series of the known experimental facts, which did not have an unequivocal interpretation within the framework of this theory, gains a simple explanation with passage to conceptions of the rigorous diffraction theory. The difficulties hindering the wide application of this theory for solving practical problems are considered as well.

Simple waveguide model of arbitrary filled plane-plane cavity

“…The detection of structural anomalies in the far field of the single-mode Nd + : glass laser with plane mirrors and intracavity slit [2,3] gave the cause for the present article. Though these anomalies had obviously regular character, which had not been connected with the action of random factors, any explanation within the limits of existing theoretical conceptions [1,4,5] was not found.…”

“…2b-c) changes by jump on one ring element with complete reorientation wave normals in the cavity. It is logical to suppose that the experimentally observed instability of the far field angular structure at monotonous change of the cavity aperture [2,3] is connected to this phenomenon as well.…”

“…We shall consider for the definiteness the cavity with a slit aperture, located at one of mirrors. This cavity is similar to that used in the experiments mentioned in the introduction [2,3]. Its optical scheme is completely equivalent to the cavity with one strip mirror and unlimited another one (Fig.…”

Simulation for Small Lamellar Grating FTIR Spectrometer for Passive Remote Sensing

“…In the alternative boundary diffraction wave (BDW) approach, Maggi [17] and Rubinowicz [18] independently showed that the problem is equivalent to solving a line integral for the spherical waves generated at the hole boundary in addition to the geometry wave that passes through the hole without perturbation. This postulate was further developed by many scientists and applied to numerous problems such as plane wave propagation over a knife-edge or through a slit [20][21][22][23][24][25][26][27].…”