Equivalent network representation for high efficiency corrugated blaze grating.

An equivalent network representation is derived for a rectangular corrugation profile grating that has been shown recently to exhibit surprisingly large blaze effect. Under proper conditions, up to 100% power conversion takes place between the incident wave and a single diffracted spectral order. The results herein show that this blaze effect can be attributed to a half-wavelength resonance in the corrugation region. Based on the equivalent network representation, a design procedure has been derived that yields the grating profile parameters (d,h) necessary to achieve the 100% conversion effect.