Glas für Lichtwellenleiter oder dergleichen

摘要

Optical wave guides made of quartz glass with reduced infrared absorption and reduced attenuation coefficients are made of a glass which consists of atoms with a mass-number higher than that of the natural isotope ratio. The quartz glass or doped quartz glass consists of silicon atoms of which most or all have the mass-numbers 29 and/or 30, as well as oxygen atoms of which most or all consist of isotopes with the mass-numbers 17 and/or 18. For doping with germanium atoms with higher mass-numbers than in the natural isotope mixture, atoms of the <76>Ge isotope are preferably used. For optical wave guides based on quartz glass with attenuation coefficients below 0.15 dB/km, glass with atoms of preferably <30>Si and/or <18>O are preferably used. Such optical wave guides are also suitable for transmitting high-energy, pulsed or continuous laser light in a wavelength range from 2.0 to 3.0 mu m. These optical wave guides are also suitable for transmitting holmium laser light of 2.1 mu m and er laser light with a wavelength equal to 2.79 and 2.94 mu m.