61. De-Long Zhang, Xiao-Fei Yang, Wan-Ying Du, Wing-Han Wong and Edwin Yue-Bun Pun, Influence of vapor transport equilibration on surface chemical composition of MgO:LiNbO3 crystal, ECS Journal of Solid State Science and Technology, Vol. 4, No. 9, pp. Q115-Q118, Sep 2015.
62. De-Long Zhang, Qun Zhang, Wing-Han Wong and Edwin Yue-Bun Pun, Er3+ diffusion in LiTaO3 crystal, Applied Surface Science, Vol. 357, pp. 1097-1103, Dec 2015.
63. De-Long Zhang, Jian Kang, Wing-Han Wong, Dao-Yin Yu and Edwin Yue-Bun Pun, Electro-optically tunable super-broadband filter based on long period grating in Ti:LiNbO3 waveguide, Optics Letters, Vol. 40, No. 20, pp. 4715-4718, Oct 2015.
64. 64.De-Long Zhang, Xiao-Fei Yang, Qun Zhang, Wing-Han Wong, Dao-Yin Yu and Edwin Yue-Bun Pun, Near-stoichiometric Ti-diffused LiNbO3 strip waveguide doped with Zr4+, Optics Letters, Vol. 40, No. 22, pp. 5307-5310, Nov 2015.
65. De-Long Zhang, Zhi-Pei Hou, Fang Han, Ping-Rang Hua, Dao-Yin Yu and Edwin Yue-Bun Pun, 2.7 µm emission of Er3+ doped LiNbO3 crystals and its thermal effect, Laser Physics Letters, 11, 4(2014).
66. De-Long Zhang, Zhi-Bei Hou, Ping-Rang Hua, Dao-Yin Yu, and Edwin Yue-Bun Pun, Synthesis and Er3+ upconversion emission characteristics of calcined Er2O3-MgO-Nb2O5 phosphors for temperature sensing, Science of Advanced Materials, 6, 4(2014).
67. De-Long Zhang, Zhi-Pei Hou, Fang Han, Ping-Rang Hua, Dao-Yin Yu, and Edwin Yue-Bun Pun, Er3+ upconversion fluorescence of ErNbO4 phosphor for optical temperature sensing, IEEE Photonics Technology Letters, 26, 16(2014).
68. De-Long Zhang, Cong-Xian Qiu, Wing-Han Wong, and Edwin Yue-Bun Pun, Diffusion properties of scandium in lithium niobate crystal, Journal of the American Ceramic Society, 97, 9(2014).
69. De-Long Zhang, Cong-Xian Qiu, Wing-Han Wong, Dao-Yin Yu, and Edwin Yue-Bun Pun, Optical-damage-resistant Ti-diffused LiNbO3 strip waveguide doped with scandium, IEEE Photonics Technology Letters, 26, 17(2014).
70. De-Long Zhang, Qun Zhang, Cong-Xian Qiu, Wing-Han Wong and Edwin Yue-Bun Pun, Zr4+ diffusion-doping effect on refractive index of LiNbO3: A comparison with bulk-doping case, Optical Materials Express, 4, 10(2014).
