Anamorphic prisms are go

[uk-laser]

Hi Simon,

Wouldn't mind 5 sets if there are a few going spare.

BRs,
Robin

PS edit - missed the "sold-out" on P1. If this goes to 300 please drop me a line...

[haymaker]

If you go for a 3rd batch, please let me know.

Thanks,

Adrian

[rfourt]

SO if you have 2 Diodes. you will have to have 4 Prism?

and if you have 4 diodes you will have to have 8 Prism?

[p1t8ull]

SO if you have 2 Diodes. you will have to have 4 Prism?

and if you have 4 diodes you will have to have 8 Prism?

You need two prisms to correct a beam so they are being sold in pairs, or sets not individual prisms, and how many you'll need depends what you are planning to do really..
One diode will need one set of prisms
If mixing two collimated beams together in a cube then a set of prisms per diode will be needed before the PBS
If you knife-edge two beams together so they are fast axis parallel then you will need one set of prisms to expand the slow axis of them both together

HTH

[Roy G. Biv]

Isn´t just one prism needed for circularization, but two needed to also get the beam parallel to the original beam?

[Doc]

Isn´t just one prism needed for circularization, but two needed to also get the beam parallel to the original beam?

No, the distance between the prisms sets the expansion.

[Roy G. Biv]

No, the distance between the prisms sets the expansion.

To my knowledge, the distance between the prisms has no effect on the expansion. It is the angle of incidence (rotation of the prisms) that influences the expansion rate.

See for example this document from Thorlabs: Anamorphic prism pair dependence on angle.

Or, as they write in a technical drawing for a prism pair in this Melles document:

1.5-mm arbitrary space does not affect magnification but will affect e and d values

which means the space between the prisms will only affect the displacement of the beam.

[rfourt]

You need two prisms to correct a beam so they are being sold in pairs, or sets not individual prisms, and how many you'll need depends what you are planning to do really..
One diode will need one set of prisms
If mixing two collimated beams together in a cube then a set of prisms per diode will be needed before the PBS
If you knife-edge two beams together so they are fast axis parallel then you will need one set of prisms to expand the slow axis of them both together

HTH

Thnx m8.

oki so if i want to Combine 4 of these. 2 by 2 in knife edge. I can use only one pair of Prismas.?

The setup im using is similar to Lasermans532 Quad kit.

Also what do you guys suggest
1. Aixiz 405 glass lens
or
2. The colliminator that ... sells here, Cant remember the name right now. sry.,

[mccarrot]

Thnx m8.

oki so if i want to Combine 4 of these. 2 by 2 in knife edge. I can use only one pair of Prismas.?

The setup im using is similar to Lasermans532 Quad kit.

Also what do you guys suggest
1. Aixiz 405 glass lens
or
2. The colliminator that ... sells here, Cant remember the name right now. sry.,

If you want to make a quad you have 2 options.

1 stack all the beams next to each other like this : IIII and the shoot it trough a prism a prism pair to expand the fast axis.

or make a dual and stack the beams like this II and shoot it trough a prism pair, and do it again only stack them on top of each other like this = then shoot it trough a prism pair and then combine it with a PBS.

the last option will give you better beam specs only allot more hardware.


I dont know if the 405 will work with this, it depends on the beam size out of the lens.

Lets say it got a 1mm beam on the fast axis and you stack 4 of them next to each other you have a 4mm beam, then if you set the prism pair at 4x expansion you end up with a 16mm beam, pretty useless I think.

[edison]

I have given the metal shop to manufacture 5 dual modules including a table for the prism pairs in front of the combined beams. When i have some pics of the stacked beams i will post the results