Backscatter setup - one way mirror

[vitom001]

I'm constructing a backscatter optical setup for my thesis and I'm trying to find something like a pellicle mirror (or pellicle beamsplitter) that is transparent to light from one side but reflects from the other side. I can use a conventional pellicle beamsplitter, however since my backscattered intensity is already low enough I wanted to try and not discard half of my beam. Any suggestions? thanks.

 

[Andy Resnick]

True one-way mirrors violate reciprocity, and so creating one requires some care- optical isolators often use Faraday rotation, for example.