Diodes today are solid-state devices, but in the beginning of the electronics age, they were crystals, as it was the German physicist Ferdinand Braun who first discovered in 1874 that crystals had ...
The four-layer diode was the key to William Shockley's plan to revolutionize AT&T's phone system. It was a great device in theory, but not in practice -- at least not at the time when Shockley wanted ...
LaserMa provides Cr4+:YAG with different doping level. The size could be up to 16×16mm2 with variable length. Initial transmission from 10-92% according to customers’ requirements. Cr4+:YAG Crystal is ...
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