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来源：百度知道 编辑：UC知道 时间：2024/05/17 07:01:43
A review of the broader principles of interferometry can be found at this optics course website (caveat emptor):
A Touch of Theory:
Constructive interference between the two arms of the interferometer occurs when:
2λnl=Δ
Where Δl is the distance that one of the mirrors moves relative to the other mirror. In this experiment, mirror #2 is moved. n is an integer (not zero) and λ is the wavelength of the light source.
The previous equation is arrived at with the following argument: When the mirror mounted on the translation stage is moved (λ/2, then the light in that arm of the interferometer moves one whole wavelength, and the interference pattern changes from a maximum to a minimum and then back to a maximum.
What this means is that, for instance, if you are looking at the bright center of a circular interference pattern, as the translation stage is slowly moved (λ/2, the central bright region should turn to a dark minimum and then back to a bright maximum.
A Touch of Theory:
Constructive interference between the two arms of the interferometer occurs when:
2λnl=Δ
Where Δl is the distance that one of the mirrors moves relative to the other mirror. In this experiment, mirror #2 is moved. n is an integer (not zero) and λ is the wavelength of the light source.
The previous equation is arrived at with the following argument: When the mirror mounted on the translation stage is moved (λ/2, then the light in that arm of the interferometer moves one whole wavelength, and the interference pattern changes from a maximum to a minimum and then back to a maximum.
What this means is that, for instance, if you are looking at the bright center of a circular interference pattern, as the translation stage is slowly moved (λ/2, the central bright region should turn to a dark minimum and then back to a bright maximum.
interferometry 的更加宽广的原则的回顾可能被发现在这个光学路线网站(货物售出拒不退换): 理论接触: 建设性的干涉在干涉仪的二条胳膊之间发生当: 2?nl =? 那里?l 是一个镜子移动相对另一镜子的距离。这个实验, 镜子#2 被移动。n 是整数(没有零) 并且? 是光源的波长。 早先等式到达以以下论据: 当镜子登上在翻译阶段被移动(?/2, 那么光干涉仪的胳膊移动一个整体波长, 和干涉样式变动从最大值向极小值和然后回到最大值。 什么这手段是, 例如, 如果您看一个圆干涉样式的明亮的中心, 因为翻译阶段慢慢地被移动(?/2, 中央明亮的区域应该转动对一个黑暗的极小值和然后回到一个明亮的最大值。这是什么被命名一个整体边缘的运动, 与n=1, 或更好?n=1 。如果, 和以后做在实验室里, 样式的中央区域从明亮被移动(以运动镜子的当中一个) 向黑暗, 和然后回到明亮的五十次, 然后?n = 50 。 唯一其它等式需要为这个实验室必须处理干涉仪的实验性设定。因为镜子不被移动直接地以测微表而是通过杠杆系统, 关系在镜子移动向距离测微表移动理论上是比例对的距离之间: mkl? =?