Gratings promise less stray light
An
Edmund Optics product story
Edited by the Engineeringtalk editorial team
Jul 19, 2005
New blazed holographic gratings ensure less stray light than conventional mechanically ruled gratings without any reduction in diffraction efficiency.
Edmund Optics offers new blazed holographic gratings that ensure less stray light than conventional mechanically ruled gratings without any reduction in diffraction efficiency.
These gratings are ideal components in all varieties of spectrometers, spectrophotometers and monochromators.
Each grating is aluminium coated for maximum performance throughout the ultraviolet, visible and infra-red spectra.
Ion-beam etching technology is employed to create the standard "sawtooth" design common to ruled gratings.
However, because the technique eliminates the need for diamond-tipped tooling, the periodic structure errors that cause stray light are no longer present, allowing these gratings to be used in instrumentation requiring excellent efficiency and resolution with minimal stray light and ghosting.
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