Latency effects and periodic structures in light-induced frustrated etching of Fe:doped LiNbO3

Alexander J. Boyland, Sakellaris Mailis, Ian E. Barry, Robert W. Eason, Malgosia Kaczmarek

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Single crystals of z-cut 0.05% Fe:doped lithium niobate (Fe:LiNbO3), have been etched in a mixture of HF and HNO3 acids, under simultaneous illumination from a ∼100 mW 488 nm wavelength Ar ion laser light source, focused to power densities of ∼50 W cm-2 at the crystal surface exposed to the etchant. Etching is partially inhibited in illuminated regions, and the degree of inhibition shows a systematic latency: sites illuminated early in the etch run resist further etching even after the light is removed. Etched structures additionally exhibit regular periodic features of ∼0.5 μm scale length. Details of these structures are shown, and the latent etching effect is discussed.

Original languageEnglish
Pages (from-to)2792-2794
Number of pages3
JournalApplied Physics Letters
Volume77
Issue number18
DOIs
Publication statusPublished - 30 Oct 2000
Externally publishedYes

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