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介绍了一种采用导光管耦合的钕玻璃多程行波放大结构。在分析导光管结构参数与耦合效率关系的基础上,设计了包含8个激光二极管阵列的抽运结构,并模拟了输出情况。该抽运结构将168个bar条发出的抽运光会聚在8mm×8mm的范围内,获得7.3J的能量输出。根据该抽运结构的输出特性,设计了以钕玻璃作为工作物质的旋转多程行波端面抽运放大结构,并在信号光注入能量为300μJ时实现了能量为15mJ的放大输出。
A neodymium glass multi-pass traveling wave amplification structure using a light guide tube coupling is introduced. Based on the analysis of the relationship between the structure parameters and the coupling efficiency of the light guide, the pumping structure containing 8 laser diode arrays is designed and the output is simulated. The pumping structure converges the pumping light emitted by 168 bars in the range of 8 mm × 8 mm to obtain an energy output of 7.3 J. According to the output characteristics of the pumping structure, a rotating multi-path traveling wave end surface pumping amplification structure using neodymium glass as working substance is designed and an amplified output with energy of 15mJ is realized when the signal light injection energy is 300μJ.