Anamorphic prism pair setup

[andy_con]

why?

its Chinese what do you expect lol

[jors]

lol hahahahahahaha

[planters]

The orientation of the prisms should not matter. The increase in beam size occurs with each stage. The second prism has its vertex opposed to the first prism and so the overall beam deflection is largely negated. This makes the beam path more linear and this is usually more convenient. Secondly, losses increase with the angle of incidence and this is not a linear effect and so if you share the expansion between two prisms, you need a less acute angle of incidence and consequently, even with two prisms, you will have lower reflection losses.

An expanding lens pair will have even lower reflection losses than the anamorphic pair, but unlike the prism the lenses will deteriorate the beam quality for any components that are off axis. A prism does not have an axis and will work just as well on a large number of knife edged beamlets simultaneously.