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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That problem has gone away as compact and inexpensive semiconductor lasers have become commercially available.

但是随着小巧便宜的半导体激光在商业市场上面市，这个问题就不复存在了。

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The tunable semiconductor lasers are important for a variety of applications such as optical communications.

波长或频率可调谐的半导体激光器在光通信等实际应用领域中有着重要而广泛的应用。

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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