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中文摘要：
进行了窄线宽、低重复频率和无色散管理的全光纤皮秒脉冲种子源的研究。数值仿真分析了腔内脉冲的演化过程，研究了腔长和光纤光栅带宽对脉冲稳定性和脉冲宽度的影响。搭建实验系统，对腔长和抽运功率的影响进行了实验研究，在腔长为24．1m时，成功产生86ps的稳定光脉冲，其线宽为0．04nm，重复频率为4．3MHz。当将此脉冲放大用于相干反射托克斯拉曼散射（CARS）光谱探测，理论光谱分辨率可达0．3cm^-1。
英文摘要：
A picosecond pulse seed source with narrow bandwidth, low repetition rate and dispersion- management-free characteristics is studied. The intracavity pulse evolution is analyzed through numerical simulation. The influences of the cavity length and the fiber Bragg grating （FBG）＇s bandwidth on the pulse stability and pulse duration are investigated. Experiment setup is established to carry out the experimental research on the effect of cavity length and pump power. When the cavity length is 24.1 m, a stable optical pulse with 86 ps pulse duration is obtained successfully, the bandwidth and the repetition rate of which are 0.04 nm and 4.3 MHz, respectively. When the pulse is amplified for coherent anti-Stokes Raman scattering（CARS） spectrum detection, the theoretical spectral resolution can be 0.3 cm ^-1.
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