LASER BEAM을 이용한 금속표면의 조도측정에 관한 연구

On the Metallic Surface Roughness Measurement by Laser Beam

A new technique for the measurement of surface roughness based on the intensity fluctuations of laser light backscattered from a moving surface has been introduced. This paper reports a method of measuring surface roughness using coherent optics and interferometry. Included are both the theory of the technique and experimental verification. The range of surface roughness which can be accurately measured by this method is also reported.