Lab1- 8/31/01

Calibrated Fabry-Perot Interferometer and tested the alignment. Alignment appears to be correct by laser dot. (diagram 1)

实验1—8月31日校准了法布里-珀罗干涉仪并测试了对齐情况。通过激光点似乎对齐正确。（图1）

First problem during alignment: three laser-like dots appeared on the viewing screen. To correct this issue an ground glass plate was placed between the laser and the first contact lens.

对齐过程中首先出现的问题是：屏幕上出现了三个类似激光的光点。为解决这个问题，将一块接地玻璃板放置在激光器和第一个透镜之间。

The next issue occurred when attempting to resolve the doublets in the "bulls eye" circular pattern. Eventually all members viewed doublet separation. (Diagram 2) The problem occurred from over compensation of the interferometers distance. Minute adjustments had to be made with the spring-loaded knobs on the face plate.

接下来的问题出现在尝试解析“bulls eye”圆图案中的双峰时。最终所有成员都看到了双峰分离。（图2）问题源于干涉仪距离的过度补偿。必须用面板上的弹簧加载调节钮进行微小调整。

Upon zeroing the F-P interferometer, it was observed that by turning the measurement dial entirely to the left, 35mm, the doublets were clearly seen.

在将F-P干涉仪调零后，观察到将测量旋钮完全向左转35mm时，双折射现象明显可见。

All members took readings of separation distance from the zero mark, at 35mm, the doublets were clearly seen.

所有成员都从零点测量了分离距离，35mm处，双峰明显可见。

A problem occurred when the adjusting knob on the interferometer fastened itself to the stationary inner cylinder used to take measurements. This was overcome with the use of several various tools and non-tools to loosen and refasten to the interferometer.

当干涉仪的调节旋钮卡死在用于测量的静止内筒上时，出现了问题。这个问题通过使用多种工具和非工具来松开和重新固定干涉仪得以解决。

Another issue that was observed was that the lower fire adjusting knob had the washer stripped and would not be able to move. Diagram 2

Number 数字	Name 名称	x1	x2	Delta x Δx
1	Alan 艾伦	5.0	34.5	29.5
2	Alan 艾伦	34.5	16.4	18.1
3	Alan 艾伦	4.4	34.6	30.2
1	Jay 杰伊	3.2	31.2	28.0
2	Jay 杰伊	31.2	13.7	32.5
3	Jay 杰伊	6.5	35.2	28.7
1	John 约翰	0.0	30.4	30.4
2	John 约翰	30.4	13.6	33.2
3	John 约翰	3.0	34.0	31.0

另一个观察到的问题是，下部的火调节旋钮的垫片已被剥离，无法移动。图2

30.66 实验者：Alan Diaz, Jay Dunn, John Marshall 物理 3901