Glasses having a low non-linear refractive index for laser applications

US4225459A · kind A · utility

Assignee

• Jenaer Glaswerk, Schott & Gen. · DE

Inventors

• Marga Faulstich
• Walter Jahn · Ehningen, DE
• Georg Krolla · Mainz, DE
• Norbert Neuroth

Key dates

• Filing date: Apr 18, 1978
• Grant date: Sep 30, 1980
• Expiry date: Apr 18, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S501/903
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Glass composition ranges are described which permit the introduction of laser activators into fluorphosphate glass with exceptionally high fluorine content while forming glasses of high crystallization stability and permitting the realization of large melt volumes. The high fluorine content imparts to the glasses an exceptionally low nonlinear refractive index n.sub.2 down to O,4 .times.10.sup.-13 esu.