It is obvious that you just ‘fooled around’ with optics.
It is also obvious you didn’t read the article since they are getting 3D holograms from which they reconstruct high res 3D images.
It helps to read PRIOR to commenting.
Lurking’
I wasn’t aware that holograms were made from interference patterns. With the right software imaging programs, this might be able to recognize telltale morphology of various microbes in different samples of blood, saliva, etc.