This means that transmission gratings cannot be used for high-dispersion applications. Peak efficiency occurs at . It can be shown that most of the incident light will be diffracted into either the zero order or positive first order if . When the angle between two divided beams is small, transmission gratings serve as ideal beamsplitting elements. Most of the transmitted light will be in the zero and first diffracted order when the grating is used off-blaze, and the ratio of the zero order efficiency to the first order efficiency can be varied over a wide range.
Prices are subject to change without notice.