Rectangular Shape

 Rectangular Shape

Product name : Rectangular Shape
Description :
The “Top-Hat” or “Flat-Top” beam shapers are diffractive optical elements (DOEs) used to transform a near-gaussian incident laser beam into a uniform-intensity (flat) spot of either round, rectangular, square, line or other shape with sharp edges in a specific work plane.

A uniform spot achieved by the top-hat beam shaper enables equal treatment to a surface, preventing over or under-exposure of specific areas. The beam shaper creates a well defined spot, with a flat-top profile, characterized by a sharp transition region that creates a clear border between treated and untreated areas.

For Multimode laser, we generally recommend to use our Beam homogenizer product line.

Applications:
● Laser materials processing: perforation, welding, cutting, scribing, ablation and drilling
● Biomedical applications
● Laser displays
● Marking and printing

Specification
Beam Mode Single Mode TEM00 with M2<1.5
Element Type Windows
Material Fused Silica
Wavelength 355nm ( Other wavelength is available )
DOE Design 2-level (binary) to 16-level
Minimum Full Angle very small (about 1.5 times Diffraction Limit)
Diffraction Efficiency 86% - 98%
Element Size 11mm to 50.8mm
Coating (Optional) AR/AR Coating

M-Shaper beam profile vs Top Hat profile

Model Description Required Beam Diameter (mm) Full Angle at 1/e2 (mRad) Price(USD) Quantity
0 TH-263-U-Y-A Top-Hat Beam Shaper 4 3.04x0.90 -
1 TH-287-U-Y-A Top-Hat Beam Shaper 5 0.47x0.24 -
2 TH-248-U-Y-A Top-Hat Beam Shaper 5 1.87x0.31 -
3 TH-261-U-Y-A Top-Hat Beam Shaper 5.1 5.40x0.31 -
4 PT-002-U-Y-A Polychromatic Top-Hat Beam Shaper 7.5 46.00x2.69 -
5 TH-280-U-Y-A Top-Hat Beam Shaper 8 0.16x0.31 -
6 TH-257-U-Y-A Top-Hat Beam Shaper 12 0.12x1.80 -
7 TH-256-U-Y-A Top-Hat Beam Shaper 12 0.13x1.60 -
8 TH-253-U-Y-A Top-Hat Beam Shaper 12 0.22x0.99 -
9 TH-278-U-Y-A Top-Hat Beam Shaper 12 0.24x1.10 -
10 TH-254-U-Y-A Top-Hat Beam Shaper 12 0.27x0.79 -
11 TH-255-U-Y-A Top-Hat Beam Shaper 12 0.37x0.59 -
12 ST-317-U-Y-A Stable Top-Hat Beam Shaper 12 0.40x0.12 -
13 ST-318-U-Y-A Stable Top-Hat Beam Shaper 12 0.50x0.12 -
14 ST-319-U-Y-A Stable Top-Hat Beam Shaper 12 0.60x0.12 -