Pulse Shaping By The Electro-Optic Effect In Chirped Periodically Poled Lithium Niobate And Adaptive Time-Domain Pulse Shaping System

Since the 1990s, the ultrafast laser pulse can be obtained stably, such as the laser pulse in picosecond and femtosecond range. Very soon, the ultrafast laser pulse shaping came into being along with the ultrafast pulse generation. In the range of optical communication system and other different circles, many new kinds of pulse shapers and pulse shaping methods have being developed, which allow generation of complicated ultrafast optical waveforms according to user specification.In this thesis, we will mainly introduce a new kind of pulse shaping method, which is based on the electro-optic effect and Bragg diffraction of chirped periodically poled lithium niobate and adaptive time-domain pulse shaping system. We gave out the relevant equations of phase and amplitude modulation and optimize the pulse shape by means of adaptive time-domain pulse shaping system based on generic algorithm. We did the theoretic simulation of pulse compression and square pulse shaping. This new pulse shaping method based on electro-optic effect and generic algorithm has the advantages of lower external drive voltage, faster response time and high pulse shaping efficiency, which has some significance to our study and innovation of new kinds of optical tools.