METHOD FOR MAKING REFRACTIVE INDEX OF SILICA GLASS HIGH

摘要

PURPOSE: To efficiently increase the refractive index of a silica glass in a short time. CONSTITUTION: In this method, the refractive index in the irradiation region (1A) is efficiently increased by irradiating the prescribed irradiation region (1A) of the silica glass (1) with X rays (2) having a wavelength of 1.2-7.0Åand exciting K shell electrons of a silicon atom in the irradiation region (1A) with the X rays (2).