【摘要】 采用宽带宽的光脉冲在铷原子蒸汽中产生两个红外波段双波长的光信号,观察到两个红外光信号间存在竞争。研究了泵浦激光强度、光脉冲啁啾和铷原子数密度对两个红外光信号特性的影响。结果表明,两个红外光信号产生于两个耦合的参量六波混频过程;信号的强度随泵浦激光强度、光脉冲啁啾和铷原子数密度发生变化,两个波长红外光信号间的竞争主要由与铷原子数密度相关的相位匹配条件所决定。更多还原

【Abstract】 Optical signals of two different wavelengths in the IR regime were generated in atomic Rb vapor using broad bandwidth laser pulses. Competition between the two signals was observed. The effects of pump laser intensity,chirp of laser pulses and Rb number density on the characteristics of the two signals were investigated. The results showthat the two signals were generated from two coupled parametric six-wave mixings processes and the competition between the two signals was dominantly governed by phase matching conditions related to Rb number density.更多还原