Smart Mirror Laser Power Meter Measures the 'Weight' of Light (IMAGE)
Caption
This mirror is a force scale that relates the force of a laser shining on it to the power (i.e., the brightness) of that laser. Scientists at NIST are developing these devices to embed into laser-based manufacturing tools for improved performance and reliability. The device in this picture is a prototype of their capacitive pressure sensor designed to measure 1,000 W lasers in the infrared with better than 1% uncertainty. The next phase of devices like this one will be standard reference instruments that report absolute power of any color laser from 1 mW up to 100 kW of power.
Credit
A. Artusio-Glimpse/NIST >alexandra.artusio-glimpse@nist.gov<
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