Abstract During the fabrication of quasi-phase-matched (QPM) devices, errors of periodic structure are usually inevitable. The errors result in the deviation of the actual periodic domain length from the theoretical value. In this paper, we numerically analyse the influence of errors on the quadrature squeezing performance of a degenerate optical parametric amplifier consisting of QPM devices. It is shown that errors significantly degrade the squeezing degree of the quadrature squeezed light. Due to the presence of the errors, the relative phase between the signal and the pump field for obtaining the maximum squeezing depends on the propagation distance of light in the crystal and the pump power.
Received: 11 April 2002
Revised: 30 November 2001
Accepted manuscript online:
PACS:
42.65.Ky
(Frequency conversion; harmonic generation, including higher-order harmonic generation)
Fund: Project supported by the National Natural Science Foundation of China (Grant No 69938010), the National Fundamental Research Programme (Grant No 2001CB309304), the Natural Science Foundation of Shanxi Province, and the Shanxi Province Foundation for Retur
Cite this article:
Li Yong-Min (李永民), Wu Ying-Rui (吴迎瑞), Zhang Kuan-Shou (张宽收), Xie Chang-De (谢常德), Peng Kun-Chi (彭堃墀) Influence of the randomly varying domain length of quasi-phase-matched crystals on quadrature squeezing performance 2002 Chinese Physics 11 790
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