激光技术, 2012, 36 (1): 1, 网络出版: 2012-01-04
低驱动电压的铌酸锂电光开关研究
Study on LiNbO3 electro-optical switches with low driving voltage
摘要
为了降低电光开关的驱动电压,采用将铌酸锂晶体置于法布里-珀罗腔内的方法进行了实验研究,得到了电光开关透过特性随驱动电压的变化关系。结果表明,与采用正交偏振片的电光开关相比,法布里-珀罗电光开关的驱动电压大幅降低,由约2.1kV下降到约580V,产生光脉冲的上升沿明显缩短,由284μs减少至128μs。理论计算了法布里-珀罗电光开关透过特性随驱动电压的变化关系,计算结果与实验结果符合得较好。
Abstract
In order to reduce the driving voltage of an electro-optical switch, a LiNbO3 crystal was placed in a Fabry-Perot cavity and the transmissive characteristics of this Fabry-Perot electro-optical switch was investigated experimentally. The results showed that the driving voltage of the Fabry-Perot electro-optical switch was ~580V, which was much lower than the half-wave voltage of an electro-optical switch used as orthogonal polarizer, ~2.1kV. Moreover, the rising time of the Fabry-Perot electro-optical switch, 128μs, was shorter than that of a switch used as orthogonal polarizer, 284μs. Theoretical analysis of transmitted characteristic dependence on driving voltage was performed, and the results were in accordance with the experimental results.
付博, 张大勇, 骆永全, 罗飞, 沈志学. 低驱动电压的铌酸锂电光开关研究[J]. 激光技术, 2012, 36(1): 1. FU Bo, ZHANG Da-yong, LUO Yong-quan, LUO Fei, SHEN Zhi-xue. Study on LiNbO3 electro-optical switches with low driving voltage[J]. Laser Technology, 2012, 36(1): 1.