Photosensitive Glass and Glass-Ceramics

This book will discuss how glass and glass ceramic interact with light, both transiently and permanently. Ways that light permanently alter the properties of glass and glass ceramic like the color, refractive index, and mechanical and chemical behaviors will be included. Each photochromatic phenomenon will be discussed in detail from the physical and chemical origin to the method fabrication and ultimately to their utilization.

Nicholas F. Borrelli presently is in a position as a corporate research fellow in the research division of Corning Incorporated located in Corning NY.

1) Introduction. Bit of history. Technical Relevance. Scope. 2) Basic photosensitive mechanism. 2.1) Initial chemistry. 2.2) Metal ions. 2.3) Origin of color. 3) Other phases produced photosensitively. 3.1) Basic mechanism for photo- nucleation of other glass-ceramic phases 3.11) Li-metasilicate (Fotoform(TM)) 3.111) Photo-machinable 3.112) Spherical lens arrays (SMILE(TM)). 3.12) NaF (Fota-Lite(TM)) 3.121 Colored 3.13) NaF (Polychromatic(TM)) 3.131) mechanism of controlled color 3.14) AgCl (Rainbow) 3.141) Mechanism of thermal formation 3.142) photo-induced effects) 3.15) Li-aluminosilicate (Nepheline) 3.151) example of double nucleation phenomenon 4) Photorefractive Effects (induced refractive index) 4.1) NaF-based 4.11) Holograms 4.12) Gradient index lenses 4.2) Photorefractive and polarizing 4.21 Photorefraction (see 3.142) 4.22) polarizing mechanism 4.3) Fs-laser induced 4.31) waveguides 4.32) gratings 4.4) Bulk Fiber Bragg Grating SiO2/GeO2+ H2 5) Photo-adaption 5.1) definition and description of the various manifestations 5.11) photo-induced color 5.12 photo-induced polarization 6) Solarization 6.1) Different Mechanisms 6.2) Extent of effect in different glasses 6.3) Bleaching effects 7) Photochemistry in porous Vycor(TM) 7.1) description and preparation of porous glass 7.2) photo-produced effect with the aid of organo-metallic impregnation