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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.

Diffractive optics for beam shaping

Square pattern: New

Square pattern diffractive optical element

  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):

View finder

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:

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.

实拍的十字线光栅

 

 

 

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:

Grids

 

Grid pattern diffractive optical element 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:

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:

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
......
r
9=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

 

Top-hat beam shaping elements

Image generation (general beam shaping) elements

Beam splitting elements

Beam homogenizer (diffuser)

Microlens array

Phase gratings for optical linear encoders

DOEs for motion sensing and gesture recognition systems

Laser keyboard by a diffractive optical element

DOEs and other surface microstructures replication

Fused silica, quartz and sapphire wafers

TIFF / BMP to GDSII conversion

Company and products brochure (PDF)(Updated on May 12 2014)

Company and products brochure (PDF)(Updated on July 4 2013)

Company and products brochure (PDF)(Updated on July 4 2012)