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Gratings
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Echelle Gratings

Typically used in high orders, echelle gratings can provide high dispersion and resolution. Echelle gratings are most often used in applications where high dispersion and resolution are important, such as atomic absorption spectroscopy, laser tuning, and astronomy. SEM for echelle grating is shown in figure.

Echelle Grating Specification:

Part
Number
Grooves
(l/mm)
Nominal Blaze Angle
Ruled Area
(HW mm2)
Efficiency Curve
RE11-001
54.5
46
100 x 100
RE11-002
79
63.43
136 x 260
RE11-003
80
63.43
50x76

 

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