Researched
Semiconductor Laser Diode
Several labs make semiconductor lasers in 1962; by 1970 they run continuously at room temperature, small enough for fibre links.
Open in the interactive tree →A laser built into a chip needs only an electric current. Laser diodes drive optical fibre networks, barcode scanners, CD and DVD players and laser pointers.
Prerequisites
- Transistor1947
- Laser1960
Unlocks
- Optical Fiber1970Compact semiconductor lasers are the light source of fibre links
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