LASERS

At this time , the field of semiconductor lasers is dominated by heterojunction devices.

目前, 在半导体激光器领域中,异质结激光器已占居支配地位.

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With ordinary photocells, one can pick up the frequency between two different lasers.

用普通光电池, 人们就能够探测到两个不同的激光之间的拍频.

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Many applications of low-power lasers are already widely known to the general public.

低功率激光器的许多应用已为大家熟知.

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Lasers have been used experimentally in delicate vocal cord operations.

激光已经在难度大的声带手术中试用.

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These gas lasers give off a continuous beam.

这种气体激光器产生连续不断光束.

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Lasers can also be used to purify materials.

激光还可以用于材料提纯.

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Development of such distributed feedback heterostructure lasers requires crystal growth on corrugated layers.

研制这种分布反馈双异质结构激光器要求在皱折层上生长出单晶层.

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Lasers promise to change this by making isotope separation easier, and cheaper.

激光可以改变这种局面,从而使同位素分离变得比较容易 、 比较廉价一些.

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Lasers can excite specific modes of the reactants.

而用激光则能够激发反应物的某些特定的运动模式.

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Indispensable as lasers seem to be, they have their drawbacks.

虽然雷射似乎不可或缺, 但也有其不利之处.

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Professor Orr has developed interesting ways of tagging chemical molecules using existing laboratory lasers.

奥尔教授发明了用现有实验室激光设备给化学分子做记号的种种有趣的办法。

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Lasers are finding increasing application in medical science.

在医学上,激光得到日益增多的应用.

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In recent years lasers have found a wide variety of practical applications.

在最近几年,激光已经获得广泛的实际应用.

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The Irvine group and their collaborators are testing whether lasers do the job better.

欧文研究小组和他们的合作伙伴正在测试激光是否会更为有效。

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These lasers usually employ chemical combustion to energize directly the lasing process by various one-way reactions.

这些激光器一般利用化学燃料,通过各种 单向 反应直接驱动激射过程.

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