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论述了飞秒激光器的相位补偿特点，讨论了采用相位薄膜作为补偿晶体的色散和相位自调制的飞秒激光器，并对相位薄膜进行了理论设计
The characteristics of phase compensation for femtosecond laser are discussed. The dispersion and phase self-modulating femtosecond laser using phase film as compensation crystal is discussed. The phase film is theoretically designed