| Influence of the randomly varying domain length of quasi—phase—matched crystals on quadrature squeezing performance |
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| 引用本文： | 李永民,吴迎瑞,张宽收,谢常德,彭堃墀.Influence of the randomly varying domain length of quasi—phase—matched crystals on quadrature squeezing performance[J].中国物理 B,2002,11(8):790-794. |
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| 作者姓名： | 李永民 吴迎瑞 张宽收 谢常德 彭堃墀 |
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| 作者单位： | State Key Laboratory of Quantum Optics and Quantum Optic Devices, Institute of Opto-Electronics Shanxi University, Taiyuan 030006, China |
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| 基金项目： | 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 Returned Overseas Chinese Scholars. |
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| 摘 要： | 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 squezing depends on the propagation distance of light in the crystal and the pump power.
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| 关 键 词： | 光学晶体 光挤压 二次谐振发生器 |
| 收稿时间： | 2002-04-11 |
Influence of the randomly varying domain length of quasi-phase-matched crystals on quadrature squeezing performance |
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| Li Yong-Min,Wu Ying-Rui,Zhang Kuan-Shou,Xie Chang-De and Peng Kun-Chi.Influence of the randomly varying domain length of quasi-phase-matched crystals on quadrature squeezing performance[J].Chinese Physics B,2002,11(8):790-794. |
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| Authors: | Li Yong-Min Wu Ying-Rui Zhang Kuan-Shou Xie Chang-De and Peng Kun-Chi |
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| Institution: | State Key Laboratory of Quantum Optics and Quantum Optic Devices, Institute of Opto-Electronics Shanxi University, Taiyuan 030006, China |
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| 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. |
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| Keywords: | quasi-phase-matched errors of periodic structure degenerate optical parametric amplification quadrature squeezing |
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