Answers are grounded in this paper and cite their sources.
Beam modes are considered by a high-aperture scalar theory based on the complex source-point method. A different form for the beam mode that avoids nonphysical singularities in intensity is introduced. The amplitude in the focal region is explored for the lowest-order mode. Conditions for oscillation of a high-aperture resonator, such as a microcavity, are derived. The amplitude in the focal region is explored for higher-order modes in systems with cylindrical symmetry. These modes are expressed in terms of Jacobi polynomials.
No takes yet. Share an insight, caveat, or question.
Sheppard et al. (1998) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: