Advanced photodiode (IMAGE)

National Institute of Standards and Technology (NIST)

Advanced photodiode

Caption

The black rectangle (center) is a high-speed, semiconductor photodiode that converts laser pulses to super-stable microwave frequencies. The diode is surrounded by a gold-coated border in which electrical leads are embedded. Wires connect the leads to the copper electrical circuit (top) used to extract microwave signals. The entire set-up rests on a brass plate for mechanical stability.

Credit

Quinlan/NIST

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