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Proceedings Paper

Nd3+-doped LiTaO3 films and powders through the sol-gel route
Author(s): Shi De Cheng; Chan Hin Kam; Yan Zhou; Yee Loy Lam; Yuen Chuen Chan
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Paper 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 4F3/2 yields 4I11/2 transition of Nd3+. The full width at half maximum is about 40 nm.

Paper Details

Date Published: 27 October 1999
PDF: 5 pages
Proc. SPIE 3803, Materials and Devices for Photonic Circuits, (27 October 1999); doi: 10.1117/12.366750
Show Author Affiliations
Shi De Cheng, Nanyang Technological Univ. (Singapore)
Chan Hin Kam, Nanyang Technological Univ. (Singapore)
Yan Zhou, Nanyang Technological Univ. (Singapore)
Yee Loy Lam, Nanyang Technological Univ. (Singapore)
Yuen Chuen Chan, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 3803:
Materials and Devices for Photonic Circuits
Mario Nicola Armenise; Walter Pecorella; Liliane G. Hubert-Pfalzgraf; S. Iraj Najafi, Editor(s)

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