DS elements with <1% undesired orders intensity vs desired orders
1X2 diffractive beam splitters are highly popular in many industrial laser applications, including welding, perforation, grooving , dicing and other applications. Standard Double spot (DS) beam splitters offer excellent efficiency of >80% in orders +-1 , with the intensity in of undesired orders +-3 being 12% of desired orders. For some sensitive applications, this intensity in undesired orders is unacceptable, causing damage or aesthetic effects to the substrate.
Holo/Or has developed an innovative diffractive 1X2 beam splitters with defocused undesired orders – at the work plane, the intensity of the undesired orders is <1% of the desired orders.
Comparison between standard DS and Suppressed higher orders DS
| Standard DS | Suppressed Higher orders | |
| Efficiency | 81% | 58% |
| First undesired orders intensity vs desired | 12% | <1% |
| Second undesired orders intensity vs desired | 4.1% | <1% |
| Angle precision | Perfect | Perfect |
| Uniformity | Perfect | Perfect |
| Beam size sensitivity | No | No |
You can find our standard Suppressed Higher Orders DS in our Beam Splitter product page- sort by the remark “Suppressed Highers Orders”
Read more on beam splitters in our application notes.
