Locally er-doped near-stoichiometric LiNbO3 Crystals prepared by standard er diffusion and post-VTE treatment

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • De-Long Zhang
  • Yi-Peng Wang
  • Ping-Rang Hua
  • Qi-Shen Jia
  • Hong-Li Liu
  • Yu-Ming Cui

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)1739-1747
Journal / PublicationJournal of the American Ceramic Society
Volume92
Issue number8
Publication statusPublished - Aug 2009

Abstract

The feasibility of preparing locally Er-doped near-stoichiometric (NS) LiNbO3 crystals for integrated optics applications is demonstrated by a two-step process with standard diffusion (1130°C/154 h) of Er metal followed by vapor transport equilibration (VTE) treatment under three different conditions of 1135°C/22 h, 1115°C/50 h, and 1125°C/60 h. Detailed studies on the crystalline phase, Li composition, diffused surface roughness, and emission characteristics of Er3+ ions indicate that there is an upper limit on the initial Er metal film thickness: ∼20 nm for an X-cut crystal and ∼30 nm for a Z-cut crystal. When the initial Er film thickness is below this limit, the post-VTE does not induce formation of ErNbO4 precipitate and the diffused surface retains high quality with a root mean square roughness - content in crystal, slight lengthening of lifetime and slight narrowing of linewidth of Er3+ emission at 1530 nm. © 2009 The American Ceramic Society.

Citation Format(s)

Locally er-doped near-stoichiometric LiNbO3 Crystals prepared by standard er diffusion and post-VTE treatment. / Zhang, De-Long; Wang, Yi-Peng; Hua, Ping-Rang; Jia, Qi-Shen; Liu, Hong-Li; Cui, Yu-Ming; Pun, Edwin Yue-Bun.

In: Journal of the American Ceramic Society, Vol. 92, No. 8, 08.2009, p. 1739-1747.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review