Holographic recording mechanisms of gratings in indium oxide films using 325 nm helium-cadmium laser irradiation

C. Grivas, S. Mailis, R. W. Eason, E. Tzamali, N. A. Vainos

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

UV (325 nm) holographic recording of gratings in indium oxide films fabricated by reactive pulsed laser deposition has been investigated as a function of growth temperature, oxygen pressure and angle of incidence of the plasma plume on the substrate. The influence of the ambient environment (air or vacuum) and the film temperature during recording has also been studied. Large steady state refractive index changes up to 6 × 10-3 were observed in layers grown at an oblique angle of 75°. About 77% of the magnitude of these changes residues after thermal annealing and is attributed to UV-induced permanent structural rearrangements. In contrast, refractive index changes in films grown at normal incidence were smaller in magnitude and completely reversible.

Original languageEnglish
Pages (from-to)457-465
Number of pages9
JournalApplied Physics A: Materials Science and Processing
Volume74
Issue number4
DOIs
Publication statusPublished - Apr 2002
Externally publishedYes

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