This has recently been extensively investigated for the fabrication of functional microstructures by fs laser interference of two or more beams.

最近通过两束或两束以上飞秒激光干涉诱导功能微结构得到了广泛研究。

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The results show that the high spectral beam combining efficiency for more beams can be obtained by this method, which provides a doable way for high power laser.

当光谱宽度较窄时，实现多路光束较高的合成效率是可行的，这为高能激光的获得提供了一种确实可行的方法。

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Moreover, engineers have worked out how to make laser beams more intense by using short lengths of optical fibre to narrow the beam.

此外，工程师们还通过光纤的短长缩小了传送的光束，由此找到了让激光传送器能源更加密集的方法。

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But chip makers are having trouble making more precise beams, and the Global Positioning System, which allows people to locate themselves to within a few metres on the surface of the earth, is limited by the performance of its atomic clocks.

ECONOMIST: A new way has been devised to make a peculiar form of matter

Moreover, engineers have worked out how to make laser beams more intense by using short lengths of optical fibre to narrow the beam.

ECONOMIST: Monitor

The more that the light passing through the sample is slowed down, however, the more the two beams will be out of phase.

ECONOMIST: Microscopy