DE-R 388 Diffractive Optical Element
- Element Number: DE-R 388
- Current Product Revision: A
- Description: Matrix 51 x 51 Dots
- Number of Dots: 2601 Dots
- Substrate Material: Polycarbonate (PC)
- Size (Ø x Thickness): 8 x 0.63 mm
- Design Wavelengths: 532 nm
- Recommended Wavelength Range: 500-560 nm
- Minimum Recommended Beam Diameter: 2-3 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 A.
Geometry and Diffraction Angles
Wavelength
Pattern Size @ 100 mm Distance
Pattern Angles
a
b
c
d
α
β
γ
δ
405 nm
35.2 mm
24.9 mm
0.5 mm
24.9 mm
20.0°
14.2°
0.3°
14.2°
450 nm
39.3 mm
27.8 mm
0.6 mm
27.8 mm
22.2°
15.8°
0.3°
15.8°
515 nm
45.3 mm
32.0 mm
0.6 mm
32.0 mm
25.5°
18.2°
0.4°
18.2°
532 nm
46.8 mm
33.1 mm
0.7 mm
33.1 mm
26.4°
18.8°
0.4°
18.8°
594 nm
52.6 mm
37.2 mm
0.7 mm
37.2 mm
29.5°
21.1°
0.4°
21.1°
640 nm
57.0 mm
40.3 mm
0.8 mm
40.3 mm
31.8°
22.8°
0.5°
22.8°
684 nm
61.3 mm
43.4 mm
0.9 mm
43.4 mm
34.1°
24.5°
0.5°
24.5°
750 nm
67.9 mm
48.0 mm
1.0 mm
48.0 mm
37.5°
27.0°
0.5°
27.0°
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:
描述 [描述] Design Wavelengths: 532 nm