【摘要】 对飞秒光参量振荡器的空间啁啾和角色散进行了理论计算和分析 .给出了在非线性晶体中的空间啁啾表达式 ,以及在BBO晶体Ⅰ类非共线相位匹配情况下 ,在角度调谐过程中非线性晶体包括角色散在内的二阶、三阶色散的解析表达式 ,并精确计算了角色散对其二阶、三阶色散的影响 .更多还原

【Abstract】 In this paper the spatial chirp and the angular dispersion for femtosecond optical parametric oscillation(OPO) are calculated theoretically and analysed. The analytical expression of the spatial chirp in the nonlinear crystal(BBO) is presented. And the analytical expressions of second- and third-order dispersions including angular dispersion of the nonlinear crystal for the noncollinearly phase-matched femtosecond BBO OPO in type-Ⅰ configuration with angle tuning. Moreover, variations of second- and third-order dispersions with the angular dispersion are calculated exactly.更多还原