Semiconductor lasers and light-emitting diodes

半导体激光器和发光二极管

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In the beginning, engineers hoped to use semiconductor lasers.

在开始时，工程师们希望能够利用半导体激光器。

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Optotools, meanwhile, makes industrial fiber-coupled high-power semiconductor lasers.

Optotools公司同时将生产工业级光纤耦合高能半导体激光器。

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In addition, since a single electron travelling through the device emits light not once (as in most other lasers), but many times, quantum cascade lasers are powerful: Dr Capasso's group has recently shown that they beat conventional semiconductor lasers by a factor of 20.

ECONOMIST: Lasers

By carefully tailoring the semiconductor layers, the researchers can make lasers that shine in two bands of infra-red light to which the atmosphere is highly transparent allowing the light to travel a long way.

ECONOMIST: Lasers