Photorefractive Properties of Molybdenum and Hafnium Co-Doped LiNbO3 Crystals
AbstractA series of LiNbO3: Mo, Hf crystals with 0.5 mol % fixed MoO3 and various HfO2 concentrations (0.0, 2.0, and 3.5 mol %) were grown by the Czochralski technique. The photorefractive properties of the LiNbO3: Mo, Hf crystals were investigated by two-wave coupling measurements and the beam distortion method was employed to obtain the optical damage resistance ability. The UV-visible and OH− absorption spectra were also studied. The experimental results imply that the photorefractive properties of LiNbO3: Mo crystals at laser wavelengths of 532, 488, and 442 nm can be greatly enhanced by doping HfO2 over the threshold concentration. At 442 nm especially, the response time of LN: Mo, Hf3.5 can be shortened to 0.9 s with a diffraction efficiency of 46.07% and a photorefractive sensitivity reaching 6.28 cm/J. Besides this, the optical damage resistance at 532 nm is 3 orders of magnitude higher than that of the mono-doped LiNbO3: Mo crystal, which is beneficial for applying it in the field of high-intensity lasers. View Full-Text
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Zhu, L.; Zheng, D.; Saeed, S.; Wang, S.; Liu, H.; Kong, Y.; Liu, S.; Chen, S.; Zhang, L.; Xu, J. Photorefractive Properties of Molybdenum and Hafnium Co-Doped LiNbO3 Crystals. Crystals 2018, 8, 322.
Zhu L, Zheng D, Saeed S, Wang S, Liu H, Kong Y, Liu S, Chen S, Zhang L, Xu J. Photorefractive Properties of Molybdenum and Hafnium Co-Doped LiNbO3 Crystals. Crystals. 2018; 8(8):322.Chicago/Turabian Style
Zhu, Ling; Zheng, Dahuai; Saeed, Shahzad; Wang, Shuolin; Liu, Hongde; Kong, Yongfa; Liu, Shiguo; Chen, Shaolin; Zhang, Ling; Xu, Jingjun. 2018. "Photorefractive Properties of Molybdenum and Hafnium Co-Doped LiNbO3 Crystals." Crystals 8, no. 8: 322.
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