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从氦氖激光器1发出的光束,入射到半透分光镜2上。折射光束通过透镜4,而反射光束再次从平镜3上反射,并通过透镜5。两束光分别被透镜聚焦在纸质圆盘6上正相反的两点附近。圆盘固定在电动机轴上,并使它通过两个导向器7。被圆盘散射的部分光线反向地射到放在离圆盘适当距离的透镜4和5上,使从平镜2和3上反射的散射光束会聚在法布里-珀罗干涉仪9两玻璃平板之间的区域。观察可通过望远镜10进行。圆盘边缘有一小孔8,在圆盘旋转时,激光束周期性地通过小孔进入光电二极管VD_1。在电阻R_1上产生的电压脉冲输入频率计11。如果入射光束对圆盘平面的倾角为α,圆盘线速度为ν,则在与圆盘相联系的参照
The light beam emitted from the He-Ne laser 1 is incident on the half mirror 2. The refracted light beam passes through the lens 4, and the reflected light beam is reflected again from the flat mirror 3 and passes through the lens 5. The two beams of light are each focused by the lens near the two opposite points on the paper puck 6. The disk is fixed on the motor shaft and passes it through two guides 7. Part of the light scattered by the disk is incident on the lenses 4 and 5 placed at an appropriate distance from the disk in opposite directions so that the scattered light beams reflected from the flat mirrors 2 and 3 converge on the Fabry-Perot interferometer 9 Area between glass plates. Observation can be done through the telescope 10. At the edge of the disk there is a small hole 8 through which the laser beam periodically enters the photodiode VD_1 as the disk rotates. The voltage pulse generated at the resistor R_1 is input to the frequency meter 11. If the angle of incidence of the incident beam with respect to the disk plane is α and the linear velocity of the disk is ν, then in reference to the disk