DE-R 206 Diffractive Optical Element
• Element Number: DE-R 206
• Current Pruduct Revision: B
• Description: Matrix 17 x 17 Dots
• Number of Dots: 289 Dots
• Substrate material: Polycarbonate (PC)
• Size (Ø x Thickness): 8 x 1.2 mm
• Design wavelengths: 660 nm
• Recommended wavelength range: 590-730 nm
• Minimum recommended beam diameter: 0.5 mm
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. Within the recommended wavelength range, the zeroth order has a similar power than the off-axis beams of the dot matrix. Diffraction efficiencies given on this datasheet have been measured using elements of product revision B.
Geometry and Diffraction Angles
Wavelength
Pattern Size @ 100 mm Distance
Pattern Angles
a
b
c
d
α
β
γ
δ
488 nm
28 mm
19.6 mm
1.23 mm
19.6 mm
15.9°
11.2°
0.7°
11.2°
543 nm
31 mm
22 mm
1.37 mm
22 mm
17.7°
12.5°
0.8°
12.5°
594 nm
34 mm
24 mm
1.50 mm
24 mm
19.4°
13.7°
0.9°
13.7°
635 nm
37 mm
26 mm
1.60 mm
26 mm
21.0°
14.6°
0.9°
14.6°
650 nm
37 mm
26 mm
1.64 mm
26 mm
21.0°
15.0°
0.9°
15.0°
730 nm
42 mm
30 mm
1.85 mm
30 mm
24.0°
16.8°
1.1°
16.8°
780 nm
45 mm
32 mm
1.98 mm
32 mm
26.0°
18.0°
1.1°
18.0°
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
488
23%
520
16%
594
2%
638
0.2%
654
0.2%
669
0.5%
687
1.0%
780
7%
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] 设计波长:660nm