Frequently Asked Questions

The efficiency performance of the ruled plane gratings varies depending on the specific grating. HORIBA Jobin Yvon provides efficiency curves for reference, but they are absolute theoretical efficiencies calculated using rigorous electromagnetic theory and do not indicate grating specifications.

The standard substrate material is Pyrex, but other materials such as fused silica, Zerodur, ULE, metals, or other materials can be considered upon request. The standard coating is aluminum, but AlMgF2, gold, or platinum are also available for an additional cost.

The blaze angle of the ruled plane gratings is given by the formula: 2a sinα= kλB, where a is the groove spacing, k is the diffraction order (usually k=1) and λB is the blaze wavelength (in Littrow configuration).

Ruled plane gratings are high-precision replicas of ruled master gratings produced by HORIBA Jobin Yvon. They are used in monochromators, spectrographs, Raman spectrometers, spectroscopy, and beam isolation.

The dimensions of the high-precision replica gratings typically range from 25x25 mm up to 120x140 mm.

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