Larry Blasch wrote:
> There are a number of materials that emit laser energy when stimulated with
> optical wavelengths of light. A simple shutter system could be used to pulse
> the focused sunlight and the coherent laser beam could then be focused and
> directed more accurately than sunlight.
> You could do this with any suitable light source so you don't have to quit
> at night.
This is an intriguing idea when directly concentrated sunlight is
Unfortunately, to date, solar-pumped lasers have less than 1% conversion
efficiency. Some results from the University of Chicago are at
Heliakon Solar Sintering Lab
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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