单向脉冲传播近似的横向极限
Transverse limits on the uni-directional pulse propagation approximation
摘要：
通过考虑横向效应（例如衍射）的影响，我计算了广泛使用的仅向前（单向）传播假设的限制。出发点是标量二阶波动方程，并作出简单的预测，目的是澄清衍射强度的前后向耦合限制。基于横向和总波矢量的比率，结果并不令人惊讶，但目的是提出与最近公布的单向近似的\emph{nonlinearity}约束极限直接可比的推导[Kinsler，J.Opt.Soc.Am. B（2007）]。
英文摘要：
I calculate the limitations on the widely-used forward-only (uni-directional) propagation assumption by considering the effects of transverse effects (e.g. diffraction). The starting point is the scalar second order wave equation, and simple predictions are made which aim to clarify the forward-backward coupling limits on diffraction strength. The result is unsurprising, being based on the ratio of transverse and total wave vectors, but the intent is to present a derivation directly comparable to a recently published \emph{nonlinearity} constrained limits on the uni-directional approximation [Kinsler, J. Opt. Soc. Am. B (2007)].
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
