By splitting a laser beam and aiming each part onto opposite sides of a polished silicon wafer, the group engineered a system of reflection and interference that traps both beams in the silicon.
这组人员设计了一个反射和干涉系统，将激光分成两束，分别对准抛光硅晶片的两面，将两束光限制在硅当中。
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The surface wave is treated as interference wave in oil seismic prospecting, however, the Rayleigh wave, like the refraction and reflection waves, contains the information of underground medium.
So, when it comes to practical application, background lighting should be chosen instead of reflection lighting, also interference coming from background should be reduced to minimum level.