Transient radiation from the open end of circular waveguide

O. Dumin, O. Dumina, V. Katrich
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引用次数: 1

Abstract

The transient radiation from the open end of a circular waveguide is considered by analytical and direct numerical methods. The radiation of short pulse from the aperture is considered by calculation of special time form of field by means of modal basis method. The method permits to solve the problem of pulse evolution for positive and negative time with the use of Laplace transform by construction of operator of propagation. The method of correction of pulse distortion on aperture is suggested on the base of properties of operator of propagation in waveguide. The control of pulse form of field on aperture is demonstrated.
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圆波导开口端的瞬态辐射
用解析法和直接数值法研究了圆波导开口端的瞬态辐射。利用模态基法计算了光场的特殊时间形式,考虑了短脉冲的辐射。该方法通过构造传播算子,利用拉普拉斯变换来解决脉冲正、负时间的演化问题。根据波导中传播算子的特性,提出了光阑上脉冲畸变的校正方法。论证了光场脉冲形式对孔径的控制。
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