DE-R 340 Diffractive Optical Element
• Element Number: DE-R 340
• Current Product Revision: A
• Description: Cross – 60 @ 450
• Number of Spots on Line: 2405
• Substrate Material: Polycarbonate (PC)
• Size (Ø x Thickness): 8 x 1.2 mm
• Design Wavelengths: 450 nm
• Recommended Wavelength Range: 420-520 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
405 nm
101 mm
54°
450 nm
116 mm
60°
488 nm
130 mm
66°
515 nm
140 mm
70°
532 nm
148 mm
73°
594 nm
177 mm
83°
635 nm
201 mm
90°
650 nm
211 mm
93°
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: 450 nm