摘要
根据完全偏振光的不同偏振态和部分偏振光的不同偏振度对二阶关联函数的影响,利用统计光学理论研究了光的不同偏振性质对关联成像的可见度和信噪比的影响.研究表明,光的偏振对热光关联成像的影响体现在部分偏振光的不同偏振度上,关联成像的可见度是偏振度的二次函数,由二阶关联函数方法得到的信噪比随着偏振度增大而提高,而利用减去背景项的二阶关联函数以及二阶相干度方法得到的信噪比均与偏振度无关.
Based on the effect of the polarization state of polarized light and the degree of polarization on the second-order correlation function,the influence of light polarization on visibility and signal-to-noise ratio（SNR） is investigated by use of the statistical optics theory.It is shown that only the polarization degree has effect on thermal light correlated imaging.The visibility of correlated imaging is a quadratic function of the polarization degree.An increase in the polarization degree leads to an increase in the SNR of conventional correlated imaging,but the SNR obtained by substracting the background and using the second-order coherent degree is independent of polarization degree.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第6期340-346,共7页
Acta Physica Sinica
基金
国家自然科学基金(批准号:11074307
10774192)
华东师范大学精密光谱国家重点实验室开放研究基金资助的课题~~
关键词
关联成像
偏振
可见度
信噪比
correlated imaging
polarization
visibility
signal-to-noise ratio
