Please forgive me, optics isn't my forte.
I'm trying to work out how to image the surface structure of an object at a distance.
- Monochromatic light- it must be imaged in the infrared.
- Object size is around 1cm square, distance to the object up to 3m.
- Preferable to not have to focus on the object.
- Needs to happen quickly (i.e. an exposure as opposed to scanning).
Hypothetically this could be done with a suitably high resolution IR camera but I want to explore the possibility of using an interferometric set up as this may produce better results.
What type of interferometer can I use, and what considerations do I need to be aware of?