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Blazing of Holographic Reflection Gratings

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Blazing of Holographic Reflection Gratings

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Although sinusoidal holographic gratings do not have the triangular groove profile found in ruled gratings, holographic gratings may still exhibit blazing characteristics. For this reason, it is not correct to say that all blazed gratings have triangular profiles, or that all blazed gratings are ruled gratings – blazing refers to high diffraction efficiency, regardless of the profile of the grooves or the method used to generate them.There are some case in which it would be preferable for a holographic grating to have a triangular groove profile rather than a sinusoidal profile. The method of using standing waves to record the grooves (see Holographic Diffraction Gratings) was developed by Sheridon and improved by Hutley.

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