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1976•Optica Acta International Journal of OpticsRequires access

A Study of Blazed Diffraction Grating Groove Profiles Using an Improved Talystep Stylus

J F Verrill

Open publisher page 6 citations

Abstract

A new stylus with which it is possible to measure both the steep and shallow sides of diffraction grating grooves is described. The relations between the ruling tool profile and the groove profiles have been investigated and it is shown that the included angle of grating grooves may be considerably less than that of the ruling tool. Recent theoretical predictions of the dependence of peak efficiencies and Wood's anomalies on groove angles have been confirmed and, in particular, a groove included angle of 90° has been found to give higher efficiencies than one of 110°.

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What this paper is about

A new stylus with which it is possible to measure both the steep and shallow sides of diffraction grating grooves is described. The relations between the ruling tool profile and the groove profiles have been investigated and it is shown that the included angle of grating grooves may be considerably less than that of the ruling tool. Recent theoretical predictions of the dependence of peak efficiencies and Wood's anomalies on groove angles have been confirmed and, in particular, a groove included angle of 90° has been found to give higher efficiencies than one of 110°.

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Available abstract

A new stylus with which it is possible to measure both the steep and shallow sides of diffraction grating grooves is described. The relations between the ruling tool profile and the groove profiles have been investigated and it is shown that the included angle of grating grooves may be considerably less than that of the ruling tool. Recent theoretical predictions of the dependence of peak efficiencies and Wood's anomalies on groove angles have been confirmed and, in particular, a groove included angle of 90° has been found to give higher efficiencies than one of 110°.

Key concepts: Stylus, Groove (engineering), Grating, Optics, Diffraction, Diffraction grating, Blazed grating, Materials science

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