An interesting but slightly dated paper is available without the usual paywall, which covers a number of advanced optics projects which were once classified, and may still be partially hidden - like the photonic bomb…
https://www.eng.yale.edu/caolab/papers/wrm03.pdf "Brian Ahern" <ahern_br...@msn.com> wrote: This nanometric laser was developed in 1996 under an AF SBIR Phase II contract. I was the contract monitor. Prof. Nabil Lawandy developed LASER PAINT. It incorporated nanopowders that scattered light and resulted in stimulated emission It is widely used today.
