Re: circular polarization selective beam splitter

On Feb 19, 3:15 am, "Timo A. Nieminen" <t...@xxxxxxxxxxxxxxxxx> wrote:
On Mon, 18 Feb 2008, jesey wrote:
As I know, there are many polarization beam splitter, which transmit p-
polarization, and reflect s-polarization.

But is there any beam splitter whichi transmit right circular-
polarization, and reflect left circular-polarization?

If there is, how does it work?

And how much does it cost compared to the general PBS?

A quarter-wave plate + a standard polarising beam splitting gives you a
circular polarisation beam splitter. If you actually want circularly
polarised outputs, you'll need another 2 quarter-wave plates.

--
Timo Nieminen - Home page:http://www.physics.uq.edu.au/people/nieminen/
E-prints:http://eprint.uq.edu.au/view/person/Nieminen,_Timo_A..html
Shrine to Spirits:http://www.users.bigpond.com/timo_nieminen/spirits.html

One additional hint --

for this method to work, you'll naturally want the fast axis of the
quarter plate to be oriented 45 degrees away from the two axes
defining the s and p polarizations of the polarizing beamsplitter cube
(PBSC). Then all the power in one handedness of circular polarization
will emerge from one face of the PBSC, and all the power in the other
handedness of circular polarization will emerge from the other face of
the PBSC. If you want to know which output gives the power in Left
circular polarization, and which one give Right circ. pol., then
you'll have to do a lot more work -- including understand ing what L
and R cic. pols. mean, and which is the fast (as opposed to the slow)
axis of your quarter-wave plate.

Regards,
D. Van Baak
.

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