Materials 2012, 5(2), 227-238; doi:10.3390/ma5020227
Article

Optical Properties of Mg, Fe, Co-Doped Near-Stoichiometric LiTaO3 Single Crystals

1email, 1email, 1email, 1,2email and 1,* email
Received: 17 November 2011; in revised form: 17 January 2012 / Accepted: 19 January 2012 / Published: 30 January 2012
(This article belongs to the Special Issue Advanced Materials for Modern Holographic Applications)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Mg, Fe co-doped near-stoichiometric lithium tantalite (SLT) single crystals were grown by employing the zone-leveling Czochralski (ZLCz) technique. The optical properties, holographic parameters, as well as the composition of the grown crystals were measured. It was found that the Li/Ta ratio decreased with the doping of Mg and Fe ions. A red shift was observed in absorption spectrum for the Mg, Fe co-doped crystals compared to the undoped and Mg-doped ones. The effect of the iron ions (Fe2+ and Fe3+) was further discussed based on the specified absorption bands. Moreover, the occupation mechanism for the defects was discussed by using the IR absorption spectrum, which was attributed to the FeTa3− defects in the highly Fe-doped crystal. In addition, the holographic parameters were also found to be improved with a higher Fe/Ta ratio in the crystals.
Keywords: LiTaO3 crystals; X-ray diffraction; single crystal growth; holographic properties
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MDPI and ACS Style

Hsu, W.T.; Chen, Z.B.; Wu, C.C.; Choubey, R.K.; Lan, C.W. Optical Properties of Mg, Fe, Co-Doped Near-Stoichiometric LiTaO3 Single Crystals. Materials 2012, 5, 227-238.

AMA Style

Hsu WT, Chen ZB, Wu CC, Choubey RK, Lan CW. Optical Properties of Mg, Fe, Co-Doped Near-Stoichiometric LiTaO3 Single Crystals. Materials. 2012; 5(2):227-238.

Chicago/Turabian Style

Hsu, Wei Tse; Chen, Zhi Bin; Wu, Chien Cheng; Choubey, Ravi Kant; Lan, Chung Wen. 2012. "Optical Properties of Mg, Fe, Co-Doped Near-Stoichiometric LiTaO3 Single Crystals." Materials 5, no. 2: 227-238.

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