Diffractive Beam Splitting
The identical replication of beams by use of diffractive beam splitters has various applications such as laser materials processing, metrology, medicine and sensoring to mention some of them. Conventionally, diffractive beam splitters are realized by laterally periodic structures that are gratings. In this case the replicated beams, which are represented by signal orders of the splitter, can only be positioned on an equidistant grid in the angular spectrum. LightTrans has introduced the diffractive MultipleBeamDeflector™ technique which enables an arbitrary positioning of signal orders, without being restricted to any grid. Moreover, the directions may be paraxial or non-paraxial. Our method should solve all the multiple beam splitting and deflection problems you require.
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- Diffractive beam splitters allow the identical replication of any type of monochromatic beam. The resulting beams travel in predefined directions. A subsequent collimation results in parallel beams with a specific equidistant distance between each other. Besides the desired beams a diffractive beam splitter produces always higher orders. Efficiencies of about 80-90% are realistic but depend on the specific application.
