VISIBLE-LIGHT MIRROR, VISIBLE-LIGHT OSCILLATION GAS LASER, AND RING LASER GYRO

摘要

PROBLEM TO BE SOLVED: To obtain a visible-light mirror which has high resistance to ultraviolet radiation and high reflection rate, using a method different from conventional methods. SOLUTION: The visible-light mirror has a substrate; a visible light mirror stack layer portion which is formed on the substrate, and which contains a layer of a dielectric material where increase in visible light absorption is induced by radiation of ultraviolet and which is a multi film mirror that reflects the visible light; and an ultraviolet mirror stack layer portion which is formed on the visible-light mirror stack layer portion and which is a multi-film mirror whose reflection rate in a predetermined wavelength band of an ultraviolet range is 50% or higher. COPYRIGHT: (C)2011,JPO&INPIT