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Magnetic modulation of subsonic COIL

机译：亚音速线圈的磁调制

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A variable magnetic field was incorporated into a ID model of subsonic COIL model with a mixing length to include its influence on the stimulated emission cross-section and other lasing parameters. The model includes a fairly complete chemical kinetics of energy transfer from the excited molecular oxygen to the injected iodine, accounting also for the gas temperature effect and a simplified mixing description of oxygen and iodine molecules. The variable magnetic field transforms the CW regime in a pulsed operation. The numerical procedure gives a possibility to tackle an arbitrary temporal dependence of the imposed magnetic field and to calculate directly the response of the laser output. The calculation was focused on the experimental data measured with the subsonic version of the COIL device in the Institute of Physics, Prague, modulated by a saw-tooth magnetic pulses. Although the model gives a reasonable agreement for the CW regime it is difficult to match the exact shape of the measured magnetically switched laser pulses with the calculated one. In this contribution we shall demonstrate various additional refinements of the model to improve the agreement with the measured pulse shape.
机译：将具有可变长度的可变磁场合并到亚音速COIL模型的ID模型中，以包括其对受激发射截面和其他激光参数的影响。该模型包括从激发的分子氧到注入的碘的能量转移的相当完整的化学动力学，还考虑了气体温度效应以及氧和碘分子的简化混合描述。可变磁场以脉冲方式转换CW模式。数值程序可以解决施加的磁场的任意时间依赖性，并可以直接计算激光输出的响应。计算的重点是布拉格物理研究所用亚音速版本的COIL设备测量的实验数据，该数据由锯齿形磁脉冲调制。尽管该模型为CW方案提供了合理的协议，但很难将所测得的磁开关激光脉冲的确切形状与所计算出的精确匹配。在本文中，我们将演示模型的各种其他改进，以改善与测量脉冲形状的一致性。

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