大气与环境光学学报, 2013, 8 (3): 203, 网络出版: 2013-08-05
I类非共线SPDC光谱分布数值模拟及实验研究
Numerical Simulation and Experiment of Spectral Distribution of Type-ⅠNoncollinear Spontaneous Parametric Down-Conversion
自发参量下转换 I类非共线匹配 光谱分布 spontaneous parametric down-conversion type-I noncollinear phase-matching spectral distribution
摘要
针对近些年发展的相关光子定标方法在光学计量方面的应用需求,在理论上分析了I类非共线自发参量下转换(SPDC)光谱的 分布,并考虑完全相位匹配和相位失配两种情况下, 355 nm连续激光光源泵浦I类非共线BBO晶体产生自发 参量下转换信号光的分布曲线。数值模拟结果表明,这两种情况下,I类非共线SPDC产生的光谱分布一致。最 后设计了SPDC光谱分布测量实验,实验表明, I类非共线SPDC光谱分布与数值模拟结果相同。
Abstract
With the application demand of optical metrology based on correlated photons method in recent years, spectral distribution of type-I noncollinear spontaneous parametric down-conversion (SPDC) is theoretically analyzed. Two different cases including ideal phasing-matching and nonideal phasing-matching are considered, SPDC spectral distribution curve is formed by 355 nm CW laser pumping type-I noncollinear BBO crystal, and numerical simulation results show that two cases have almost the same spectral distribution. Lastly measurement experiment of SPDC spectral distribution is designed. The experiment shows type-I noncollinear SPDC spectral distribution is in good agreement with numerical simulation.
李平付, 李健军, 夏茂鹏, 郑小兵. I类非共线SPDC光谱分布数值模拟及实验研究[J]. 大气与环境光学学报, 2013, 8(3): 203. LI Ping-fu, LI Jian-jun, XIA Mao-peng, ZHENG Xiao-bing. Numerical Simulation and Experiment of Spectral Distribution of Type-ⅠNoncollinear Spontaneous Parametric Down-Conversion[J]. Journal of Atmospheric and Environmental Optics, 2013, 8(3): 203.