DE-R 354 Diffractive Optical Element
• Element Number: DE-R 354
• Current Product Revision: A
• Description: Square Grid 10 x 10 Lines
• Number of Lines: 100 Lines
• Substrate Material: Polycarbonate (PC)
• Size (Ø x Thickness): 8 x 1.2 mm
• Design Wavelengths: 658 nm
• Recommended Wavelength Range: 620-680 nm
• Minimum Recommended Beam Diameter: 2-3 mm
Within the recommended wavelength range, the zeroth order central spot is not visible on the line. When the DOE is used at a wavelength different from the design wavelength, the pattern will scale in size and geometrical distortions may occur (see section ‘Geometry and Diffraction Angles▼’). When the DOE is used at a wavelength within the recommended wavelength range, the element shows the lowest intensity in the central spot (see section ‘Zero Order Diffraction Intensity▼’ on reverse page).Diffraction efficiencies given on this datasheet have been measured using elements of product revision A.
Geometry and Diffraction Angles
If the DOE is used at laser wavelengths close to the design wavelength (Δλ < 50nm) the geometrical distortion is usually tolerable (see table below).
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: 658 nm