Directly photoinscribed thick bragg gratings in ohara WMS-15 glass-ceramic

Abstract

Volume gratings were UV inscribed in WMS-15 glass-ceramic at 193 and 248nm without additional processing. Weak, easily bleached gratings resulted from fluences below 0.3kJ/cm2. Stable gratings with Δn ~ 6×10-5 were formed at higher fluences

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