lasers making sound waves

[chipdouglas]

I just read an article about lasers making underwater sound waves. well it is described as that but it just boils the water and other equipment picks up that disturbance. here is the link.

Lasers to seek, but not destroy, subs - Innovation- msnbc.com

 

[nikokapo]

I'd like to see how they will detect and succesfully receive the perceived signal