WTB: Half Wave Plates For 532nm

Jem · Post by **Jem** » Tue Sep 29, 2009 4:49 pm

Hi all

I could do with a couple (maybe three ) half wave plates specifically for 532nm.

Does anyone have any kicking around that they're not using? These are for constructing a variable beamsplitter in my holography setup.

Thanks

Jem

P.S. I have a couple for other wavelengths but they don't work too good with 532nm, I need some that are specific to 532nm, thanks.

142laser · Post by **142laser** » Wed Sep 30, 2009 12:04 pm

Hi,
Try e bay store cheapoptics. Contact him and ask; he has meny, meny optics and is reasonable. Good luck. Phil

Jem · Post by **Jem** » Wed Sep 30, 2009 3:11 pm

Thanks Phil

Cheers

Jem

JohnFP · Post by **JohnFP** » Wed Sep 30, 2009 3:53 pm

Hey Jem, why do you need 3? Usually 2 does the trick. One before the BS and one in one of the paths to rotate the polarization to match the other path.

Jem · Post by **Jem** » Wed Sep 30, 2009 5:02 pm

JohnFP wrote:Hey Jem, why do you need 3? Usually 2 does the trick. One before the BS and one in one of the paths to rotate the polarization to match the other path.

Hi John

Yep, as you suggest, two would be absolutely fine. However, I thought if someone had three kicking around I might as well go for it. That way i've covered all eventualities

. There's no way on this planet I could afford to buy the waveplates at the prices Newport, Thorlabs and such charge :boohoo: . So, I was sorta hoping that someone may have a couple (or three

) laying around gathering dust that they may be prepared to part with for a reasonable cost.

I'm having great fun with my little optical table (1200 x 600), I'm just getting to grips with some of the geometry, you have to be pretty creative to fit some of the setups onto such a small area. I suppose one of the good points is i'm only using a maximum plate size of 5" x 4", I also have an 8" f3 collimating mirror. I made my first split beam transmission holograms last friday... I just Looove this hobby, every time I see a newly developed hologram i'm like a kid who's just seen the most exciting thing he's ever seen in his life

Also, now i've discovered how to post swell my 'green' holograms so that they replay 'Gold' I can't wait to get back into my workshop. It's taken me a long time to get to this stage, but my perseverence is finally paying off. I think the turning point for me was getting a 'proper' optical table and some decent mounts so I could lock everything down nice and secure.

I'm hoping to post some pictures of my results shortly, as soon as I get myself a new camera. My old one ceased to function when it was *just* outside the warranty period

Cheers

Jem