【摘要】 研究了非共线准相位匹配过程中,周期极化RbTiOAsO₄晶体同时满足准相位匹配和群速匹配条件的非共线角和相应的极化周期随信号光波长的变化。分析了满足群速匹配条件时,非共线准相位匹配的调谐特性。数值模拟了增益带宽随非共线角、晶体温度和极化周期的变化关系。对比了群速匹配和最大增益带宽情况下,周期极化RbTiOAsO₄晶体增益带宽与晶体温度之间的关系。更多还原

【Abstract】 The dependence of noncollinear angle and the corresponding grating periods on signal wavelength for satisfying quasi phase-matching and group velocity matching simultaneously of periodically poled RbTiOAsO₄ in noncollinear quasi phase-matched are carried out.The tuning characteristic of noncollinear interaction in group velocity matching situation is analyzed.The dependence of the gain bandwidth on the noncollinear angle,temperature,crystal angle and grating periods are simulated in detail.The dependence of gain bandwidth on crystal temperature for the biggest gain bandwidth and group velocity matching is compared in detail.更多还原