使用周期极化磷酸钛氧钾（PPKTP）和周期极化铌酸锂（PPLN）的简并光学参量放大器产生的正交相位压缩态的比较。

Comparison of phase quadrature squeezed states generated from degenerate optical parametric amplifiers using PPKTP and PPLN.

作者信息

Wan Zhenju, Feng Jinxia, Li Yuanji, Zhang Kuanshou

出版信息

Opt Express. 2018 Mar 5;26(5):5531-5540. doi: 10.1364/OE.26.005531.

DOI:10.1364/OE.26.005531

Abstract

Phase quadrature squeezed states at 1550 nm generated from degenerate optical parametric amplifiers (DOPAs) using periodically poled KTiOPO (PPKTP) and periodically poled lithium niobate (PPLN) are compared. A squeezing of 6.8 dB was produced from the DOPA using PPKTP with the phase matching temperature of 34.5 °C. By contrast, a measured squeezing of 4.9 dB was generated using PPLN with the phase matching temperature of 135.2 °C. The degradation of squeezing using a nonlinear crystal with a high phase matching temperature is explained by a theoretical model of DOPAs including the extra phase noise caused by the guided acoustic wave Brillouin scattering within the nonlinear crystal.

摘要

对使用周期极化磷酸钛氧钾（PPKTP）和周期极化铌酸锂（PPLN）的简并光学参量放大器（DOPA）产生的1550纳米的相位正交压缩态进行了比较。使用PPKTP且相位匹配温度为34.5°C的DOPA产生了6.8分贝的压缩。相比之下，使用PPLN且相位匹配温度为135.2°C时，测得的压缩为4.9分贝。使用具有高相位匹配温度的非线性晶体时压缩的退化，通过包括非线性晶体内导波光声布里渊散射引起的额外相位噪声的DOPA理论模型进行了解释。