来自极化非线性晶体的强光谱宽带孪生光束。

Intense spectrally broad-band twin beams from poled nonlinear crystals.

作者信息

Peřina Jan

机构信息

Joint Laboratory of Optics of Palacký University and Institute of Physics of the Czech Academy of Sciences, Faculty of Science, Palacký University, 17. listopadu 12, 77146, Olomouc, Czech Republic.

出版信息

Sci Rep. 2018 Oct 18;8(1):15350. doi: 10.1038/s41598-018-33546-0.

DOI:10.1038/s41598-018-33546-0

PMID:30337564

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6193979/

Abstract

Properties of intense twin beams generated in parametric down-conversion in periodically poled LiNbO crystals and their chirped variants by intense pump fields are analyzed along the model of intense parametric down-conversion that allows for pump depletion and uses the dual spatio-spectral Schmidt modes. Spectral and spatial intensity auto- and cross-correlation functions are determined as they depend on the pump power. Temporal correlations in intense twin beams at the fs time scale are investigated using the Hong-Ou-Mandel interferometer and the process of sum-frequency generation.

摘要

沿着允许泵浦耗尽并使用双空间光谱施密特模式的强参量下转换模型，分析了由强泵浦场在周期极化铌酸锂晶体及其啁啾变体中参量下转换产生的强孪生光束的特性。确定了光谱和空间强度自相关函数及互相关函数与泵浦功率的依赖关系。使用Hong-Ou-Mandel干涉仪和和频产生过程研究了飞秒时间尺度下强孪生光束中的时间相关性。