Abstract

Transmittance (or reflectance) characteristics of generalized gratings are described for Gaussian-laser-beam-diameter measurements. The generalized gratings provide for accurate measurement of both small and large Gaussian beam diameters and are superior to the Ronchi, the triangular, and the sinusoidal rulings. Also the proposed generalized gratings account for all width variations of the opaque, transparent, and transitional regions within a selected ruling.

© 1993 Optical Society of America

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