Answers are grounded in this paper and cite their sources.
The method of moments is used to investigate the diffraction properties of a doubly periodic grating whose mutually orthogonal axes of periodicity lie in separated planes. A new constraint relating the electric field amplitudes in a Littrow mount has been discovered. This relation has been shown to be valid for any symmetric biperiodic grid. Numerical studies using the formalism have shown the structure to be capable of providing a/e ratios of the order of 30 and thus to be potentially useful in solar selective systems.
No takes yet. Share an insight, caveat, or question.
Adams et al. (1978) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: