Ultra-powerful laser could make incandescent light bulbs more efficient
Look, LED light bulbs are fanciful, great for Ma Earth and a fine addition to any home, barber shop or underground fight club. But let’s be honest — even the guy that bikes through blizzards to get to work and wears garb that he grew in his basement isn’t apt to shell out $120 a pop to have what’s likely the most efficient light bulb American dollars can buy. Enter Chunlei Guo from the University of Rochester, who has helped discover a process which could morph a traditional incandescent light bulb into a beacon of burning light without using nearly as much energy as before. In fact, his usage of the femtosecond laser pulse — which creates a “unique array of nano- and micro-scale structures on the surface of a regular tungsten filament” — could enable a bulb to increase output efficiency in order to emit 100-watts worth of light while sucking down less than 60-watts of power.
Read the whole article on Engadget
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