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,355nm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。
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.
出处
《大气与环境光学学报》
CAS
2013年第3期203-211,共9页
Journal of Atmospheric and Environmental Optics
基金
国家自然科学基金项目(11204318)资助
关键词
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