Composition, surface morphology, optical properties and Ti profile characteristics of Ti-diffused LiTaO3 strip waveguide
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
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Detail(s)
Original language | English |
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Pages (from-to) | 2519-2524 |
Journal / Publication | Journal of Alloys and Compounds |
Volume | 695 |
Online published | 12 Nov 2016 |
Publication status | Published - 25 Feb 2017 |
Link(s)
Abstract
Ti-diffused LiTaO3 strip waveguide was fabricated by in-diffusion of 8-μm-wide, 100-nm-thick Ti-strip at 1300 °C for 6 h in wet O2 atmosphere. Its composition, surface morphology, lattice parameter, optical properties and Ti profile characteristics were fully characterized. It is shown that the waveguide is in the congruent composition environment. The waveguide surface caves in ∼70 nm below the crystal surface due to Ti-induced lattice contraction, which is verified by X-ray single-crystal diffraction. Optical characterizations show that the waveguide well supports both TE and TM single-mode propagation at the 1.5 μm wavelength, is polarization-insensitive, and has a loss of 0.4 (0.3) dB/cm for the TM (TE) mode. Secondary ion mass spectrometry analysis shows that the Ti profile follows a sum of two error functions in the width direction and a Gaussian function in the depth direction of the waveguide.
Research Area(s)
- Crystal growth, Diffusion, Optical materials, Optical properties, Optical spectroscopy, X-ray diffraction
Citation Format(s)
Composition, surface morphology, optical properties and Ti profile characteristics of Ti-diffused LiTaO3 strip waveguide. / Yang, Xiao-Fei; Zhang, Zi-Bo; Sun, Hong-Xue et al.
In: Journal of Alloys and Compounds, Vol. 695, 25.02.2017, p. 2519-2524.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review