I always come to FT with the questions I cannot solve. What does this have to do with travel photography? Well the thing I want to film travels from one place to another. Also I am wiling to travel in order to film this.

I need to record some video of a beam of light in the near infrared range. The characteristics of the beam are:

A continuous beam at less than 10 mW at a wavelength of 785 ±15 nm with a beam diameter of 80 mm at the sending end spreading out as it travels to the receiving end to about 200 mm.

Does anyone know how I would do this? I have tried using an infrared filter on a DSLR to record a still image with no result. If this requires hiring someone with specialized equipment, I am in the DFW area. I could also bring the equipment to another location if the cost is not too high.