Song Xiao-shi, Yu Zi-yan, Wang Qin, Xu Fei, Lu Yan-qing
College of Engineering and Applied Sciences and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, China.
Opt Express. 2011 Jan 3;19(1):380-6. doi: 10.1364/OE.19.000380.
Polarization independent sum frequency generation (SFG) is proposed in an electro-optic (EO) tunable periodically poled Lithium Niobate (PPLN). The PPLN consists of four sections. External electric field could be selectively applied to them to induce polarization rotation between the ordinary and extraordinary waves. If the domain structure is well designed, the signal wave with an arbitrary polarization state could realize efficient frequency up-conversion as long as a z-polarized pump wave is selected. The applications in single photon detection and optical communications are discussed.
在电光（EO）可调谐周期极化铌酸锂（PPLN）中提出了偏振无关和频产生（SFG）。PPLN由四个部分组成。可以选择性地对它们施加外部电场，以诱导寻常波和非寻常波之间的偏振旋转。如果畴结构设计良好，只要选择z偏振泵浦波，具有任意偏振态的信号波就能实现高效的频率上转换。文中讨论了其在单光子探测和光通信中的应用。
