Nd3+-doped LiTaO3 films and powders through the sol-gel route

Shi De Cheng; Chan Hin Kam; Yan Zhou; Yee Loy Lam; Yuen Chuen Chan

doi:10.1117/12.366750

27 October 1999 Nd3+-doped LiTaO3 films and powders through the sol-gel route

Shi De Cheng, Chan Hin Kam, Yan Zhou, Yee Loy Lam, Yuen Chuen Chan

Proceedings Volume 3803, Materials and Devices for Photonic Circuits; (1999) https://doi.org/10.1117/12.366750
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Nd³⁺-doped LiTaO₃ is successfully derived by the sol-gel method. The host solution is prepared by mixing LiOC₂H₅ and Ta(OC₂H₅)₅ and different concentrations of 1.0, 2.0, and 3.0 mol% of Nd³⁺ are introduced. The films are deposited on SiO₂/Si substrate by spin coating and the powders are prepared by sintering the precipitation of the solution. XRD and micro-Raman studies show that the material displays good crystallization of pure trigonal phase of LiTaO₃. AFM and SEM studies reveal that the crystalline size is about several tens of nanometers for the films and a few hundred nanometers for the powders after an annealing at 600 degree(s)C. Using the 488 nm line of an Ar⁺ laser as an excitation source, photoluminescence of the powders is observed at 1.06 micrometers , corresponding to the ⁴F_3/2 yields ⁴I_11/2 transition of Nd³⁺. The full width at half maximum is about 40 nm.

Citation Download Citation

Shi De Cheng, Chan Hin Kam, Yan Zhou, Yee Loy Lam, and Yuen Chuen Chan "Nd3+-doped LiTaO3 films and powders through the sol-gel route", Proc. SPIE 3803, Materials and Devices for Photonic Circuits, (27 October 1999); https://doi.org/10.1117/12.366750

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