Journal
OPTICS LETTERS
Volume 32, Issue 19, Pages 2888-2890Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.32.002888
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Tightly focused, linearly polarized, femtosecond laser radiation can produce highly birefringent nanograting structures inside fused silica glass. Here we report that when the polarization direction of the feratosecond light is changed, old nanogratings are erased and simultaneously replaced with new ones whose orientation is solely determined by the polarization of the rewrite beam. We also show that these volume nanogratings can be rewritten 1000 times with little degradation in their quality. (c) 2007 Optical Society of America.
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