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Titel: Thermal and long-term stability of fast-ion-irradiation-induced refractive index changes in lithium niobate crystals
Autor(en): M.-R. Zamani-Meymian Person, L. Jentjens Person, N. L. Raeth Person, K. Peithmann Person und K. Maier Person
Journal: Appl. Phys. A
Typ: Article
Jahr: 2010
Band: 98
Ausgabe: 4
Seite(n): 909-912
Verlag: SPRINGER
Verlagsort: 233 SPRING ST, NEW YORK, NY 10013 USA
DOI: 10.1007/s00339-009-5475-9
ISSN: 0947-8396
Datei / URL: http://www.springerlink.com/content/310746l53235q1t4/
Zusammenfassung: Irradiation of congruently melting, nominally undoped lithium niobate crystals (LiNbO3) with high-energy, low-mass 3He ions, which are transmitted through the crystal, causes large and stable changes of the refractive index. In the irradiated regions, the extraordinary index is increased whereas the ordinary index is diminished. The decay of these changes upon annealing treatments up to 400°C is investigated, exhibiting a strongly non-monoexponential decay behaviour. Long-term measurements of the refractive index changes yield no pattern erasure on a timescale of four years.

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