Linards Skuja Tokyo Institute of Technology and Univ. of Latvia (Japan) Hideo Hosono Tokyo Institute of Technology and Japan Science and Technology Corp. (Japan) Masahiro Hirano Japan Science and Technology Corp. (Japan)
Color centers contributing to the optical absorption spectrum of synthetic silica glass in the near infrared to vacuum UV range are reviewed. Intrinsic defects related to oxygen deficiency are characterized: E'-centers, oxygen vacancies, divalent silicon and defects related to oxygen excess: oxygen dangling bonds, peroxy radicals, interstitial oxygen and ozone molecules. The optical properties of common impurities/dopants in synthetic silicas used in laser optics are discussed.