Influence of OH-group concentration on optical properties of silica glass in terahertz frequency region. (23rd June 2015)

• Record Type: Journal Article
• Authors: Tsuzuki, Satoshi; Kuzuu, Nobu; Horikoshi, Hideharu; Saito, Katsuya; Yamamoto, Kohji; Tani, Masahiko
• Is Part Of: Applied physics express. Volume 8:Number 7(2015:Jul.)
• Publication Date: 2015-06-23
• Subjects: Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.7567/APEX.8.072402
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: We evaluated the optical properties of various types of silica glass with different OH-group concentrations by using terahertz (THz) time-domain spectroscopy. The results show that the absorption coefficient in the THz frequency region varied with the OH-group concentration and that the variation depended only on the OH-group concentration, irrespective of the glass-manufacturing process. On the other hand, the refractive index did not depend on the OH-group concentration. Thus, the THz optical properties of silica glass can be predicted based on the OH-group concentration in the glass, and vice versa.