Diffractive image generation elements (general beam shapers) convert a laser beam with Gaussian intensity distribution into a beam with an accurate and almost arbitrary intensity distribution. Specific applications include precise control of treatment depth in laser heat treatment, laser hardening, cladding; turning a laser beam into a square or hexagon to increase the fill-factor in laser direct writing; and laser tweezers, etc.
Square pattern:
Item No: SQ5.8
Full angle: 5.8 degrees at 650 nm
Zero order: ~2% of incident laser power
Intensity of ghost image: ~5% of the signal intensity
The left picture shows the image of the actual square pattern produced by our designed and fabricated DOE. The image was taken with a point-and shoot camera.
View finder (Circle and cross):
| Item No | DOE receiving size | image size at 650 nm & 1000 mm distance | Output image |
| CC1-1 | 6.5 x 6.5 mm |
a=81.25 mm d=101.56 mm |
 |
| CC1-2 | 3.25 x 3.25 mm |
a=162.50 mm d=101.56 mm |
 |
| CC1-3 | 6.5 x 6.5 mm |
a=162.50 m d=101.56 mm |
|
| CC1-4G | 3.5 x 3.5 mm |
a=162.50 mm d=203.12 mm |
|
| CC1-5G | 3.5 x 3.5 mm |
a=325.00 mm d=203.12 mm |
|
Crosshair:
| Item No | DOE receiving size | Diffractive angle | Description |
| CH-635nm-5DEG | 4x4mm | 5 DEG @ 635 nm | Added on 2014.6.12. |
| CH-635nm-10DEG | 4x4mm | 10 DEG @ 635 nm | Added on 2014.6.12. |
| CH-635nm-15DEG | 4x4mm | 15 DEG @ 635 nm | Added on 2014.6.12. |
| CH-532nm-20DEG | 5x5mm | 20 DEG @ 532 nm | Added on 2014.2.24. |
| CH-532nm-60DEG | 5x5mm | 60 DEG @ 532 nm | Added on 2014.2.24. |
The left picture shows the image of the actual crosshair pattern produced by our designed and fabricated DOE. The image was taken with a point-and shoot camera.
Grids:
Zero order: ~3% of incident laser power
Intensity of ghost image: ~10% of the signal intensity
The left picture shows the image of the actual grid pattern produced by our designed and fabricated DOE. The image was taken with a point-and shoot camera.
| Item No | DOE receiving size | Full angle at 650 nm | Description | Output image |
| G8-8 | 6 x 6 mm | 8 deg | 8x8 grids | |
| G9-8 | 6 x 6 mm | 8 deg | 9x9 grids | |
| G9-40 | 6 x 6 mm | 40 deg | 9x9 grids |
Lines:
| Item No |
DOE receiving size |
Image size at 650 nm & 1000 mm distance | Description | Output image |
| L1-34 | 3.25 x 3.25 mm | a=49.99 mm, b=199.95 mm | 5 lines | |
| L1-35 | 6.5 x 6.5 mm | a=19.84 mm, b=198.36 mm | 11 lines | |
| L1-36 | 3.25 x 3.25 mm | a=13.49 mm, b=188.84 mm | 15 lines | |
| L1-37 | 6.5 x 6.5 mm | a=9.92 mm, b=198.36 mm | 21 lines | |
| L1-38 | 3.25 x 3.25 mm | a=9.52 mm, b=190.43 mm | 21 lines |
Rings:
| Item No | DOE receiving size | Image size at 650 nm & 1000 mm distance | Description | Output image | |
| R9-1 | 8x8 mm |
r1=9.7 mm ...... r9=87.5 mm |
9 evenly-spaced rings |
Updated
on 16 Oct 2013 |
|
| C1-39 | 3.25 x 3.25mm | r1=50.78 mm | 1 ring |
 |
|
| R1-40 | 6.5 x 6.5 mm | r1=11.90 mm r2=23.80 mm r3=35.71 mm r4=47.61 mm r5=59.51 mm | 5 evenly-spaced rings |
 |
Updated
on 16 Oct 2013 |
| R1-41 | 6.5 x 6.5 mm | r1=15.87 mm r2=31.74 mm r3=47.61 mm r4=63.48 mm r5=79.35 mm | 5 evenly-spaced rings |
|
Updated
on 16 Oct 2013 |