分析了光纤中零色散附近的简并四波混频（FWM）和简并光参量放大（OPA）过程。
The degenerate four wave mixing (FWM) and optical parametric amplifying (OPA) processes near the zero dispersion in optical fiber are analyzed.
对铷蒸气中的喇曼共振四波参量混频过程进行了详细的实验观测和理论分析。获得了基本一致的结果。
The experimental observation and theoretical analysis on the Raman-resonant four-wave parametric mixing process in rubidium vapour have been made. The theory agrees with the experimental results.
考虑受激喇曼散射的竞争效应，求得了简并四波混频后向波参量振荡信号强度与泵浦输入强度的关系。
Considering the competing effect of Raman scattering, the dependence of intensity of parametric backward wave oscillation on the pumping intensity is obtained.
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