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Werner-von-Siemens-Str. 15
82140 Olching / Germany

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Fax: +49 (0)8142 / 28 64-11

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HEDS – High-Efficiency Double-Spot DOEs

Photonics News No 80

Special Beam Splitter for High Efficiency


D80-002

The new diffractive double-spot elements from Holo/OR have an efficiency of 97%; previous standard versions only achieved 81%.  

High-Efficiency Double-Spot (HEDS)
Diffractive beam splitters split the incoming beam into beams with equal properties. The intensity of all partial beams corresponds approximately to the total intensity of the incoming beam. For the new “high-efficiency double-spot DOEs,” this means that each partial beam is >48% of the total intensity!

Advantage: No Higher Diffraction Orders
In previous versions, part of the light had higher diffraction orders; this is shown in blue in the graph. The HEDS elements have higher diffraction orders that are negligibly small: This is an advantage in critical applications.
HEDS are available for wavelengths from 193 nm to 10.6 µm.

Adjustment Features
High efficiency is achieved through a novel design that requires the centering of the HEDS in the beam path. When shifted, the spot shape and total efficiency of the element remain unchanged; however, the power distribution between both spots changes. This property can be used advantageously for the fine adjustment of the split ratio; for example, instead of a 50:50 ratio, a ratio of 47:53 could be set.
These elements are used, for example, in lithography, perforation, laser cutting, and other material processing applications.


Datasheet:

Further product information:
Diffractive Elements for Beam Splitting

Manufacturer:
Holo-OR Ltd.

Contact:

Contact Person:    René Sattler
Company:    Laser Components Germany GmbH
Address:    Werner-von-Siemens-Str. 15
ZIP / City:    82140 Olching
Phone:    +49 (0) 8142 2864-763
Fax:    +49 (0) 8142 2864-11
Email:    rene.sattler@lasercomponents.com
 


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Laura Dreßler

+49 (0) 8142 2864-135