CYCLIC STRUCTURE FORMATION METHOD AND SURFACE TREATMENT METHOD

摘要

A cyclic structure formation method for continuously and widely forming a cyclic structure by using a uniaxial laser beam, comprising the steps of radiating the laser beam (1) having a threshold near a finishing threshold to a specimen (2), overlappingly scanning the laser beam thereon to increase scattered light (13) by an abrasion (12) due to the interference (11) of incident light with the scattered light along the surface of the material of the specimen so as to cause the interference at an interval equal to the wavelength lambda of the laser beam (1)(14) in order to self-organizingly form the cyclic structure (15), wherein the cyclic pitch of the formed cyclic structure is changed by changing the incident angle of the laser beam (1) on the surface of the specimen (2), and when the incident light of the laser beam (1) on the surface of the specimen (2) has an angle, the cyclic pitch thereof can be changed by changing the scanning direction thereof.