Interesting .... could you please post the type of this filter and the source , maybe a datasheet ?Finally got my 538nm edge filter. Is it normal to still see a little light directly through the filter. I put 50mw directly in and see like 1mw out. Pretty good but had hoped to see nothing.
Hello, wow, that was a quick answer!https://www.ebay.com/itm/283010042988?ul_noapp=true
I put 50mw in and see barley 1 mw out so indirect I think it will work for raman. Will let you know. So far All I have is the laser and filter. Have not done anything else yet.
I plan to let the laser illuminate the sample and then collect the light with a microscope objective. The filter will be on the back of the objective and go out via fiber to the spec. I would try using the filter as dichro to put the beam and signal coplanar but am unsure of the leaking. I don't think it will matter how I illuminate the sample since the scatter is in all direction so I can get a bit of isolation by not using the filter as a bounce mirror.
Because of this i contacted Thunder Optics directly and we found a solution ouside of ebay for less shipping cost. But .... it was not easy ...@chloderic
I was surprised to see the shipping cost of your sharp edge filter. Maybe that is the shipping to me, but $60.00 for a 1 inch filter seems excessive. I can certainly ship it to France for less than that.
Hello Paul,Good for you. I would also try to find a way around such a ridiculous shipping charge.
Yes kecked, we talked about this here, you can shift the wavelenght of the filter a litte bit by rotating , therefor it is needed to have a collimated beam ....Well the filter does work. There is a tiny bit of leakage but it's workable. The filter is really sensitive to angle for the leaking so it is important to align the laser source and the filter. Not too hard but unexpected. I did check the laser for a second line and did NOT find one. Laser is 532-534 depending on temperature. That's a lot to ask for a 538 edge filter.