摘要
自发参量下转换 (spontaneousparametricdown conversion ,SPDC)光场是基于单色泵浦光子流和量子真空噪声对非线性晶体的综合作用而产生的 ,它固有的量子起源决定了在非经典光场研究中的重要地位和作用。
The spontaneous parametric down-conversion (SPDC) light field is generated by the combined action of a monochromatic flux of pumping photons and quantum vacuum noise on a nonlinear crystal with no center of symmetry. Its intrinsical quantum origin determines its important role in the area of non-classical field research. In this paper, the coherence characteristics of the SPDC light field is investigated theoretically, and the application of SPDC light field to absolute measurement of quantum efficiency of photo detectors is studied experimentally.Finally, it points out the wide application prospect of SPDC light field application.
出处
《激光技术》
CAS
CSCD
北大核心
2003年第6期526-530,共5页
Laser Technology
基金
国家自然科学基金重大资助项目
关键词
非经典光场
自发参量下转换
相干效应
非线性晶体
non-classical light field
spontaneous parametric down-conversion
interference effects
nonlinear crystal
