1. Electro-Optic Intensity Modulation in Fe-Doped KTa0.65Nb0.35O3 Crystals
- Author
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Yuanyuan Zhang, Xuping Wang, Yuguo Yang, Xian-Shun Lv, Cheng-Kai Yang, Jing Li, Fei Zhang, Bing Liu, Lei Wei, and Huadi Zhang
- Subjects
Materials science ,General Chemical Engineering ,Physics::Optics ,Fe doping ,02 engineering and technology ,01 natural sciences ,Inorganic Chemistry ,Amplitude modulation ,Crystal ,Condensed Matter::Superconductivity ,0103 physical sciences ,lcsh:QD901-999 ,Waveform ,General Materials Science ,electro-optic modulation ,010302 applied physics ,business.industry ,Attenuation ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Ray ,KTN crystals ,Optoelectronics ,Curie temperature ,lcsh:Crystallography ,0210 nano-technology ,business ,Intensity modulation ,Voltage - Abstract
KTa0.65Nb0.35O3 and Fe-doped KTa0.65Nb0.35O3 crystals were grown by the top-seeded solution growth method (TSSG). Fe ion doping significantly improves the electro-optic properties of cubic KTN crystals. We describe their electro-optic modulation theory and experimental research. The electro-optic modulation waveform deduced by theoretical calculation is basically consistent with the waveform measured in the experiment. We observed the attenuation of light modulation under multiple voltage cycles. The modulation curve of the crystal is inconsistent when the crystal voltage is boosting and bucking. Under the same voltage condition, the higher the incident light power, the faster the modulation depth attenuation. In this experiment, the size of the KTN crystal chip is 6 mm ×, 5 mm ×, 2 mm. We obtain the effective electro-optic coefficient as s11 &minus, s12 = 1.34 ×, 10&minus, 15 m2/V2, the half-wave voltage near the Curie temperature is 39 V.
- Published
- 2020
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