| 用熵描述非线性光传输的数字模拟解 |
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| 引用本文： | 邵毅全.用熵描述非线性光传输的数字模拟解[J].四川激光,2001,22(4):32-33. |
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| 作者姓名： | 邵毅全 |
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| 作者单位： | 内江师范学院物理系 内江641112 |
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| 摘 要： | 本文给出光函数熵的定义，用数值模拟了几种具体情况下光的熵，结果表明，熵的方法确实能用于描述光传输过程；熵对传输方向的变化率等于零时，光函数（光脉冲或光束）波形保持不变；熵变化率大于零时，光函数波形展宽（发散），熵变化率小于零时，光函数波形压缩（聚焦）。用熵表征非线性光传输优于用脉（束）宽、二阶矩表征。
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| 关 键 词： | 非线性光传输 熵 数字模拟解 光函数 |
| 修稿时间： | 2001年6月5日 |
Numerical calculation on entropy representing nonlinear propagation of light |
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| Shao Yiquan.Numerical calculation on entropy representing nonlinear propagation of light[J].Laser Journal,2001,22(4):32-33. |
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| Authors: | Shao Yiquan |
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| Abstract: | In this paper, the entropy in quantum mechanics is introduced to represent nonlinear propagation of light in the framework of the Schroedinger formulation of light propagation. Our numerical calculation show that the entropy and its differentiation with respect to the propagation direction can describe the compression and broadening of light pulse(or the focusing and diffussion of light beam), which is better than pulse(beam) width and second-order moments. |
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| Keywords: | nonlinear propagation entropy beam width pulse width second-order moments |
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