>>belzeb+(OP)
Have you seen the way lasers are used to do this? NDT or non destructive testing has use dual laser systems to create ultrasound for several decades. Check it out if you are interested.
>>b0tzzz+hF
I think one of the subjects of my exam for entering engineering schools (a thing we do in France) was about that.
Would really like to see papers on the subject, because I don't really understand how you can use lasers in opaque materials. Will also look at my test to see if it's really about that.