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Very Efficient Ceramic Sunlight-to-Laser System Unveiled in Uzbekistan

red laser 300x224 Very Efficient Ceramic Sunlight to Laser System Unveiled in UzbekistanA team of researchers from the Scientific and Production Association in Uzbekistan have succeeded transforming sunlight into laser light in a fashion that outperforms all the other similar projects that had been doing the same thing in the past. The team brags a 35 percent efficiency, versus one of maximum 2 percent obtained by others.

Their discovery has been published in the AIP Journal of Renewable and Sustainable Energy as producing a laser device that concentrates light by using a small parabolic mirror 1 meter in diameter and that has the focal spot of about 2 to 3 centimeters in diameter.

The light reflected by the parabolic mirror then hits a two-layer ceramic disc known as a Neodymium and Chromium co-doped YAG (yttrium aluminum garnet) laser material, whose one of the sides would be highly reflective, and the other will do the opposite.

The electrons in the above-mentioned material would be excited by sunlight, and would emit a 1.06 micrometers laser light (infrared). A water-filled heat sink would then take the extra heat produced by the laser.

A final step is the process is that in which the laser thus obtained would travel to a prime focus and get reflected back to the ceramic surface and then exit the solar collector at an oblique angle. This step ensures a higher conversion efficiency than others’.

[via eurekalert]

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