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在线性 Z形折叠腔的基础上 ,采用了一种能够消除输出耦合镜带宽限制的方法 ,用3mm的钛宝石短晶体和石英色散补偿棱镜得到了光谱带宽为 1 2 1 nm的自锁模钛宝石激光脉冲 .在分析光脉冲自相关仪测量系统对测量影响的基础上 ,优化并基本消除了测量系统带来的影响 ,假设光脉冲形状为双曲正割型 ,得到了 1 2 fs的光脉冲 ,该光脉冲光谱半宽( FWHM)为 87.6nm,中心波长为 849.7nm,光脉冲平均输出功率为 40 0 m W,重复率为97MHz
Based on the linear Z-folded cavity, a method that can eliminate the bandwidth limitations of the output coupling mirror is adopted. The self-locking mode titanium with a spectral bandwidth of 121 nm is obtained by using a 3 mm short titanium sapphire crystal and a quartz dispersion compensation prism Gems laser pulse.Based on the analysis of the measuring system of the optical pulse autocorrelator, the influence of the measurement system is optimized and basically eliminated. Assuming the shape of the light pulse is hyperbolic secant, the 1 2 fs light The FWHM of the optical pulse is 87.6 nm, the center wavelength is 849.7 nm, the average output power of the optical pulse is 40 0 mW and the repetition rate is 97 MHz