| Josephson结中混沌孤振子的超辐射 |
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| 引用本文： | 张细利,海文华,方见树.Josephson结中混沌孤振子的超辐射[J].低温物理学报,2001,23(2):121-127. |
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| 作者姓名： | 张细利 海文华 方见树 |
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| 作者单位： | 1. 湖南师范大学物理系,
2. 株洲高等师范专科学校物理系, |
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| 基金项目： | 国家自然科学基金! (编号 19775 0 2 3，198740 19)资助项目 |
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| 摘 要： | 考虑两个耦合的长Josephson结，运用直接微扰法，讨论周期微扰下混沌孤振子的超辐射功率，结果表明：周期微扰下的孤子作混沌运动，当孤子逐渐与周期微扰同步时，辐射功率不断增大，其上限虽受限的有界条件制约，但通常比孤子对的辐射功率更大，理论分析和数值模拟均很好地说明了这一点，这为混沌孤振子的实际应用提供理论依据。
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| 关 键 词： | Josephson结 混沌弧振子 超辐射 直接微扰法 数值模拟 高效辐射源 |
| 修稿时间： | 2001年2月10日 |
HYPERRADIANCE FROM CHAOTIC SOLITONOSCILLATOR IN JOSEPHSON JUNCTIONS |
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| ZHANG Xi-li,Hai Wen-hua,FANG Jian-Shu.HYPERRADIANCE FROM CHAOTIC SOLITONOSCILLATOR IN JOSEPHSON JUNCTIONS[J].Chinese Journal of Low Temperature Physics,2001,23(2):121-127. |
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| Authors: | ZHANG Xi-li Hai Wen-hua FANG Jian-Shu |
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| Abstract: | We consider two weakly coupled Josephson junctions. Using usual perturbation technology we discuss the system hyperradiance from soliton perturbed by a periodic sinusoidal wave. The results reveal that soliton with periodic perturbation possesses chaotic behavior. When the soliton is nearly synchronized with periodic solution, the emitted power will rapidly increase. Although the boundedness condition limits its maximal value strictly, chaotic soliton oscillator emits much greater power than soliton pair in general. Theoretical analysis and numerical simulations both demonstrate the above results well. Those results gave theoretical basis for practical application. |
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