The rate that electromagnetic energy is absorbed into the body. The specific absorption rate (SAR) is measured in watts per kilogram (W/kg) of human tissue. In the U.S., the maximum allowed SAR for a ...
(Phys.org) —The absorption of petawatt (10 15 watts) laser light by solid matter is a crucial problem that has been the subject of theoretical and experimental study for more than two decades. In a ...
A semiconductor diode that modulates light from a laser that is separate from it, but may be fabricated on the same wafer. Turning the current on causes absorption of the light. See fiber optics ...
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