A material's reflectivity is a function of the wavelength. So while a mirror might reflect visible radiation, it might not refect something in the UV range. Also, if the energy is high enough, you now have non-linear effects. I believe this is the effect the military is looking for in this weapon.
Another point to consider is that laser guided weapons work off the reflection of the guide beam. So putting a reflective surface might make the target less susceptible to a high-power laser, it would be more vunerable to more conventional smart weapons.
Slashdot Mirror
A material's reflectivity is a function of the wavelength. So while a mirror might reflect visible radiation, it might not refect something in the UV range. Also, if the energy is high enough, you now have non-linear effects. I believe this is the effect the military is looking for in this weapon.
Another point to consider is that laser guided weapons work off the reflection of the guide beam. So putting a reflective surface might make the target less susceptible to a high-power laser, it would be more vunerable to more conventional smart weapons.