DE-R 212 Diffractive Optical Element
• Element Number: DE-R 212
• Current Product Revision: A
• Description: Cross – 25 @532
• Number of Spots on Line: 1191
• Substrate Material: Polycarbonate (PC)
• Size (Ø x Thickness): 8 x 1.2 mm
• Design Wavelengths: 532 nm
• Recommended Wavelength Range: 500-640 nm
• Minimum Recommended Beam Diameter: 2-3 mm
Within the recommended wavelength range, the zeroth order is not brighter than the rest of the cross. Pattern size and pattern angles and the intensity in the undiffracted central spot ('zero order intensity', see reverse page) will vary most with the wavelength. Diffraction efficiencies given on this datasheet have been measured using elements of product revision A.
Pattern Geometry and Diffraction Angles
Wavelength
Patttern Size @ 100 mm Distance
Pattern Angle
a
α
452 nm
38 mm
22 °
488 nm
41 mm
23 °
515 nm
44 mm
25 °
532 nm
45 mm
25 °
594 nm
51 mm
28 °
638 nm
55 mm
31 °
654 nm
56 mm
31 °
700 nm
61 mm
34 °
Setup
Laser diodes are the most common light source to be used with diffractive optical elements, but other laser light sources may also be used.
The DOEs are best used with collimated or convergent laser sources. The microstructure surface should be oriented towards the laser.
The 0-order spot is equivalent in size and shape to the original beam, but its power is attenuated.
Diffraction Zero Order Intensity:
Wavelength
0-Order Intensity
452
12%
488
4%
515
1.4%
532
0.7%
594
2%
638
6%
654
8%
MOUNTED VERSION
For testing or setups under laboratory conditions we offer a version mounted in 12.7 mm stainless steel frame for use with standard laboratory holders.
COLLIMATED / CONVERGI NG LASER
The laser can be collimated for long range use or converging for a fixed working distance. Please note that the size/thickness of each spot or line depends on the focusing of the laser.
描述 [描述] Design Wavelengths: 532 nm