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19-Year-Old Makes Homemade Solar Death Ray
An anonymous reader writes "Concentrated solar power has the potential to generate immense amounts of energy — but it can also be amazingly destructive. American student Eric Jacqmain has assembled over 5,800 mirrors into his own parabolic 'solar Death Ray'."
More specifically, there are two issues with your suggestion. Firstly, lasers are not power-limited by input light, but rather by the design of the lasing cavity and how efficiently it stimulates further emission. Many types do need a decent kick to get them going, but beyond that a bright source offers little or no benefit.
Secondly, even if more input light was useful, this mirror doesn't actually provide that much power. It's just the use of the parabolic reflector to concentrate the energy into a small energy that makes it look impressive. Looking at the dish, it's a few square metres in area, at most. That's only a few kW of light in total, of which only a tiny portion is at any one wavelength which would be useful for pumping a laser. An appropriate pump laser or even a decent flashlamp would be vastly better than this for stimulating laser emission.
Also, LASER. Light Amplification by Stimulated Emission of Radiation.
The tiny mirror pieces are from a mirror ball. Yes, I actually do go out sometimes.
You're retarded, small focused flat mirrors are more efficient and less prone to scatter than a non perfect parabolic shape. Not to mention the reflectivity of actual mirror is far superior to any sprays or sheeting you could cheaply purchase. There is a reason the cells of production solar plants use flat mirrors that they combine to form a parrabolic array.