论文标题
基于光束 - 分离器的相干光束组合的缩放潜力
The scaling potential of beam-splitter-based coherent beam combination
论文作者
论文摘要
从理论上分析了非线性折射和残留吸收对基于光束分解的相干束组合中可达到的峰值和平均功率的影响。虽然峰值功率仅受孔径尺寸的限制，但基本的平均功率极限是由光束分离器材料及其涂层的热光学和热机械特性给出的。基于我们的分析，可以通过保持远光质量（M2 {\ leq} 1.1）的最新光学功能获得100 kW的平均功率，并且仅损失了2％的组合效率。该结果表明，当今基于梁的相干光束组合的功率缩放潜力远未耗尽。讨论了通往兆瓦级平均功率的潜在缩放途径，以进行优化的梁分离器几何形状。
The impact of nonlinear refraction and residual absorption on the achievable peak and average power in beam-splitter-based coherent beam combination is analyzed theoretically. While the peak power remains limited only by the aperture size, a fundamental average power limit is given by the thermo-optical and thermo-mechanical properties of the beam splitter material and its coatings. Based on our analysis, 100 kW average power can be obtained with state-of-the-art optics at maintained high beam quality (M2 {\leq} 1.1) and at only 2% loss of combining efficiency. This result indicates that the power-scaling potential of today's beam-splitter-based coherent beam combination is far from being depleted. A potential scaling route to megawatt-level average power is discussed for optimized beam splitter geometry.
