Ruled Diffraction Gratings 50x50x9.5mm 1200Lines/mm Float Glass

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Home  Products  Ruled Diffraction Gratings  378566

$Ruled Diffraction Gratings 50x50x9.5mm 1200Lines/mm Float Glass$

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Ruled Diffraction Gratings 50x50x9.5mm 1200Lines/mm Float Glass

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Product No. 378566

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Parameters Efficiency Curve Related Products Description

Size 50x50x9.5mm

Groove Density 1200Lines/mm

Blaze Wavelength 750nm

Blaze Angle 26°44'

Chromatic Dispersion 0.74nm/mrad

Substrate Material Float Glass

Surface Quality 60-40

Dimension Tolerance ±0.5mm

Thickness Tolerance ±0.5mm

Efficiency 60%~ 80% @Blaze Wavelength

Clear Aperture 90%

Damage Threshold 350mJ/cm² @200ns Pulsed Laser；40W/cm² （CW） Continuous Laser

Genre UV~NIR Gratings

$Ruled Diffraction Gratings 25x25x6mm 1200Lines/mm Float Glass$

Ruled Diffraction Gratings 25x25x6mm 1200Lines/mm Float Glass

$Ruled Diffraction Gratings 25x25x6mm 1800Lines/mm Float Glass$

Ruled Diffraction Gratings 25x25x6mm 1800Lines/mm Float Glass

$Ruled Diffraction Gratings 50x50x9.5mm 1200Lines/mm Float Glass$

Ruled Diffraction Gratings 50x50x9.5mm 1200Lines/mm Float Glass

$Ruled Diffraction Gratings 50x50x9.5mm 1200Lines/mm Float Glass$

Ruled Diffraction Gratings 50x50x9.5mm 1200Lines/mm Float Glass

The initial step to make an original or master grating is to select the substrate material, usually usin glass or copper. The substrate material is polished to a high flatness and coated with very thin aluminum. The parallelism and equidistance of the grooves takes time to adjust. A few days is required to set up and test before engraving. The engraver must make sure the diamond knife head can return back in a precise way after each engraving and can engrave the substrate based on the quantity on schedule. The parallelism and displacement of the grooves must be precisely controlled. Engraving requires a series of tests. After testing passed, the original grating can be carved on a large substrate. The original grating is very expensive, so the grating can only be used limited until the replica grating is developed.

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