Ultrafast traveling-wave electro-optic deflector using domain-engineered LiTaO3 crystal -: art. no. 081101
Ultrafast traveling-wave electro-optic deflector using domain-engineered LiTaO3 crystal -: art. no. 081101
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DOI：
10.1063/1.2033133
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发表时间：
2005-08-22
影响因子：
4
通讯作者：
Kobayashi, T
中科院分区：
文献类型：
--
作者：
Hisatake, S;Shibuya, K;Kobayashi, T
本文报道了一种工作在皮秒量级的行波电光正弦偏转器。偏转器是通过使用简单的域工程过程中的LiTaO 3电光晶体。行波电光相位调制器中的畴反转区的形状在理论上是考虑到晶体中的光群速度和微波相速度之间的速度失配而设计的，用于光束横截面内的调制指数的空间线性分布。在偏转周期为61.5 ps时，最大可分辨光点数为13.0 +/- 0.6。我们的EOD可以适用于时间-空间光学信息处理系统的最小时间分辨率为1.5 ps。(c)2005年美国物理学会。
We report a traveling-wave electro-optic sinusoidal deflector which operates in a picosecond time scale. The deflector is fabricated by use of simple domain-engineering processes in a LiTaO3 electro-optic crystal. The shape of the domain inverted region in a traveling-wave electro-optic phase modulator is theoretically designed in consideration of velocity mismatch between an optical group velocity and a microwave phase velocity in a crystal for spatial linear distribution of the modulation index within an optical beam cross section. At a deflection period of 61.5 ps, the maximum resolvable spot number of 13.0 +/- 0.6 is demonstrated. Our EOD can be applicable to time-space optical information processing systems with the minimum temporal resolution of 1.5 ps. (c) 2005 American Institute of Physics.