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acdcvy1988

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[交流] 【趣闻】Gouy相位

有谁知道Gouy相位是怎么回事，对于高斯光束而言聚焦之后Gouy相位的表达式是什么啊？

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1楼 2010-12-23 16:37:34

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

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小木虫:)(金币+3):3q, but can you speak Chinese? 2010-12-27 04:32:19

The Gouy phase also named longitudinal phase delay
e(z)=arctan(z/zr)

This phase shifts by π as the beam passes through the focus, in addition to the normal change in phase as the beam propagates. Physically, this shift is the result of the uncertainty principle. The transverse confinement of the beam at the focus necessarily implies an increase in the uncertainty in its transverse momentum, which leads to a change in phase of the beam.