Issue 10, 2018

Tailored fabrication of a prospective acousto–optic crystal TiTe3O8 endowed with high performance

Abstract

A prospective acousto–optic (A/O) crystal TiTe3O8 endowed with superior thermal features and appreciable transparency is rationally developed by a tailored approach, namely TeO2 (a material possessing outstanding A/O performance) in synergistic combination with TiO2. Using the selected Li2CO3–TeO2 fluxes, a high-quality and large-dimension single crystal of cubic TiTe3O8 is extracted through a high temperature top-seeded solution growth (TSSG) technique. Remarkably, TiTe3O8 contains a d0 transition metal cation, Ti4+, which is typically susceptible to second-order Jahn–Teller (SOJT) distortions, but surprisingly in a locally undistorted octahedral geometry. The high symmetry of TiTe3O8 makes it ideal for crystal processing and A/O device design. Notably, the tellurite crystal TiTe3O8 displaying an adequate A/O figure of merit is originally utilized to fabricate an A/O modulator that exhibits a high diffraction efficiency of 77%, which is competitive with the value reported for the TeO2 crystal. Such a tailored design enriches the family of A/O materials and opens up a viable route toward exploiting controlled fabrication of potential A/O materials.

Graphical abstract: Tailored fabrication of a prospective acousto–optic crystal TiTe3O8 endowed with high performance

Supplementary files

Article information

Article type
Paper
Submitted
23 Nov 2017
Accepted
17 Jan 2018
First published
17 Jan 2018

J. Mater. Chem. C, 2018,6, 2443-2451

Tailored fabrication of a prospective acousto–optic crystal TiTe3O8 endowed with high performance

W. Lu, Z. Gao, Q. Wu, X. Tian, Y. Sun, Y. Liu and X. Tao, J. Mater. Chem. C, 2018, 6, 2443 DOI: 10.1039/C7TC05382G

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