Ion Exchange Method - Diffusion Barrier Investigations

G. Pielak; M. Szustakowski; A. Kiezun

doi:10.1117/12.952956

30 January 1990 Ion Exchange Method - Diffusion Barrier Investigations

G. Pielak, M. Szustakowski, A. Kiezun

Proceedings Volume 1085, Optical Fibres and Their Applications V; (1990) https://doi.org/10.1117/12.952956
Event: Optical Fibers and Their Applications V, 1989, Warsaw, Poland

Abstract

Ion exchange method is used to GRIN-rod lenses manufacturing. In this process the ion exchange occurs between bulk glass (rod) and a molten salt. It was find that diffusion barrier exists on a border of glass surface and molten salt. The investigations of this barrier show that it value varies with ion exchange time and process temperature. It was find that in the case when thalium glass rod was treated in KNO₃, bath, the minimum of the potential after 24 h was in temperature of 407°C, after 48 h in 422°C, after 72 h in 438°C and so on. So there are the possibility to keep the minimum of diffusion barrier by changing the temperature of the process and then the effectiveness of ion exchange process is the most effective. The time needed to obtain suitable refractive index distribution in a process when temperature was linearly changed from 400°C to 460°C was shorter of about 30% compare with the process in which temperature was constant and equal 450°C.

Citation Download Citation

G. Pielak, M. Szustakowski, and A. Kiezun "Ion Exchange Method - Diffusion Barrier Investigations", Proc. SPIE 1085, Optical Fibres and Their Applications V, (30 January 1990); https://doi.org/10.1117/12.952956

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