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31.6 Groove, 63° Echelle, 12.5 X 25 mm, 6 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
12.5 X 25 mm
Size Tolerance
±0.5 mm
Thickness
6 mm
Thickness Tolerance
±0.5 mm
Grooves Parallel
Short
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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31.6 Groove, 63° Echelle, 12.5 X 25 mm, 9.5 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
12.5 X 25 mm
Size Tolerance
±0.5 mm
Thickness
9.5 mm
Thickness Tolerance
±0.5 mm
Grooves Parallel
Short
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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31.6 Groove, 63° Echelle, 12.5 X 50 mm, 9.5 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
12.5 X 50 mm
Size Tolerance
±0.5 mm
Thickness
9.5 mm
Thickness Tolerance
±0.5 mm
Grooves Parallel
Short
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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31.6 Groove, 63° Echelle, 12.7 mm Sq., 6 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
12.7 mm Sq.
Size Tolerance
±0.5 mm
Thickness
6 mm
Thickness Tolerance
±0.5 mm
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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31.6 Groove, 63° Echelle, 25 mm Sq., 6 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
25 mm Sq.
Size Tolerance
±0.5 mm
Thickness
6 mm
Thickness Tolerance
±0.5 mm
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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31.6 Groove, 63° Echelle, 25 mm Sq., 9.5 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
25 mm Sq.
Size Tolerance
±0.5 mm
Thickness
9.5 mm
Thickness Tolerance
±0.5 mm
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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31.6 Groove, 63° Echelle, 25 X 50 mm, 9.5 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
25 X 50 mm
Size Tolerance
±0.5 mm
Thickness
9.5 mm
Thickness Tolerance
±0.5 mm
Grooves Parallel
Short
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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31.6 Groove, 63° Echelle, 30 mm Sq., 9.5 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
30 mm Sq.
Size Tolerance
±0.5 mm
Thickness
9.5 mm
Thickness Tolerance
±0.5 mm
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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31.6 Groove, 63° Echelle, 50 mm Sq., 9.5 mm Thick, CW Type
Grooves Per mm
31.6
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
14.37
Substrate
Pyrex
Size
50 mm sq.
Size Tolerance
±0.5 mm
Thickness
9.5 mm
Thickness Tolerance
±0.5 mm
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
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316 Groove, 63° Echelle, 12.5 X 25 mm, 6 mm Thick, CW Type
Grooves Per mm
316
Groove Angle
63°
Dispersion @ 500 nm (nm/mr)
1.44
Substrate
Pyrex
Size
12.5 X 25 mm
Size Tolerance
±0.5 mm
Thickness
6 mm
Thickness Tolerance
±0.5 mm
Grooves Parallel
Short
Coating
Aluminum
Scratch/Dig
60/40
Clear Aperture
90%
Edge Angle
90° ±0.50°
Perpindicularity
90° ±0.50°
Operating Temperature Range
-50° C to +200° C
Damage Threshold: Pulsed laser
3.5 J/cm², 200 nano sec. pulse
Damage Threshold: CW Laser
250 watts/cm²
Echelle Diffraction Gratings
Optometrics
Echelle Diffraction Gratings
Echelle Replica Gratings
Echelle replica gratings are special low period gratings designed for use in high orders only. The maximum possible resolution is obtained but, in general, it is necessary to use a second grating or prism to separate out the overlapping diffracted orders. Echelle replica gratings are an ideal solution for high-resolution spectroscopy due to their high dispersion in high orders.
Any Optometrics grating is available with either standard or CW-type construction for higher damage threshold performance. They can also be produced on substrates with a lower coefficient of thermal expansion for better stability. No damage threshold minimums apply to gratings with an overcoat.
Pulsed 350 milli-joules/ cm2 @ 200 n sec.
CW 40 watts/cm2
Pulsed 3.5 joules/ cm2 @ 200 n sec.
CW 250 watts/cm2
Optometrics develops hybrid grating and optical filter for holographic weapons sight.