利用电光相位调制和交叉相位调制制作时间透镜的实验及仿真分析

Experiment and simulation of time lens using electro-optic phase modulation and cross phase modulation

对时间成像理论进行简要研究.利用电光相位调制器进行光脉冲压缩实验,并分别对基于电光相位调制和交叉相位调制的时间透镜组成的时间成像系统进行了仿真和讨论.实验结果表明,基于电光相位调制的时间透镜组成的时间成像系统可以有效压缩光脉冲,但是该系统受到了孔径限制,压缩系数较小,分辨率较低.进一步的仿真分析结果表明,基于交叉相位调制的时间透镜组成的时间成像系统不受孔径限制,能够获得更大的压缩系数和更高的分辨率,但是该系统的实现难度较大.

Temporal imaging is one of the important research issues of time lens.The theory of temporal imaging is investigated briefly.The experiment using electro-optic phase modulation to perform optical pulses compression is demonstrated.And the simulation and the discussion using electro-optic phase modulation and cross phase modulation to perform temporal imaging system are presented.The experimental results show that the temporal imaging system which consisits of time lens basing electro-optic phase modulation can effectively compress the optical pulses.However,the compression coefficient is restricted by the aperture of the time lens,and the resolution of the temporal imaging system is low.Further more,the simulation results and the analysis results indicate that the temporal imaging system which consists of time lens basing cross phase modulation has a bigger compression coefficient and a higher resolution.However,this temporal imaging system is difficult to realize.