基于干涉原理的光波长测量装置设计

Design of Optical Wavelength Measurement Device Based on Interference Principle

少量透明液体放入器皿中,使器皿旋转,透明液体形成凹薄液膜。当待测光入射至凹薄液膜,该薄膜上下表面的反射光相干时,即可发生干涉现象。通过显微镜观察得到干涉图样,依据干涉原理设计出光波长测量装置;以法兰盘做连接件构成机械转台,实现稳定机械旋转,从而达到准确测量目的。具有方案新颖、简化传统实验、提高实验效率的特点,在实验教学方面有一定实用价值。

Put a small amount of transparent liquid into the vessel,make the vessel rotate,and the transparent liquid forms a concave thin liquid film.When the measured light is incident into a concave thin liquid film,the reflected light on the upper and lower surfaces of the film are coherent,the interference phenomenon can occur.The interference pattern is obtained through microscope observation,and the optical wavelength measuring device is designed according to the interference principle.Flanges are used as connectors to form a mechanical turntable,which can stabilize the mechanical rotation and achieve accurate measurement.It has the characteristics of novel scheme,simplifying traditional experiment and improving experiment efficiency,and has certain practical value in experiment teaching.