平顶光束 或 平顶波束 （Tophat beam，Flat-top，top-hat beam），是一种在圆形区域内通量（能量密度）几乎一致的 雷射光束 或电子束，而且其超出其边缘后，能量会快速降到零。

A flat-top beam (or top-hat beam) is a light beam (often a transformed laser beam) having an intensity profile which is flat over most of the covered area. This is in contrast to Gaussian beams, for example, where the intensity smoothly decays from its maximum on the beam axis to zero.

本文“高斯光束与顶帽光束”可以作为您的最佳指南。 什么是高斯光束？ 在学校里，我们都学过一些光学基础知识。 当平面波穿过平凸透镜时，它们会在焦点或 0 点相遇。 因此，当激光束在焦 …

平頂光束 或 平頂波束 （Tophat beam，Flat-top，top-hat beam），是一種在圓形區域內通量（能量密度）幾乎一致的 雷射光束 或電子束，而且其超出其邊緣後，能量會快速降到零。

To achieve ideal flat-top beams with a minimal optical footprint, this paper presents a beam shaping system that utilizes a single aspheric lens. This system is designed to effectively convert the divergent Gaussian beam profile from a TO-packaged laser diode into a flat-top profile, providing a streamlined and efficient solution for beam shaping.

本文即以 高斯光束整形 及 平顶匀化 为例，介绍两种常用方法。 ——————————正文分割线———————————— Keywords: Beam Reshape, Beam Homogenizer, Gassian to Flat Top beam homogenizer. 两种匀化手段： 阵列有两种结构：矩形阵列和六角形阵列，可生成对应的光斑形态. 矩形 阵列示例： 使用Source Diode和一片非球面准直透镜作为输入高斯光斑，经过复眼透镜，再使用一片非球面透镜聚焦。 图右上角为输入高斯光斑形态，下中图为经过矩形复眼透镜 …

Flat top, or top hat, beams have a constant irradiance profile through the cross-section of the laser beam (Figure 1). Some applications benefit from a constant intensity over a given area, including the processing of semiconductor wafers, nonlinear frequency conversion at high power levels, and materials processing.

ST设计基于计算机辅助的数值优化设计，可用于实现任意形状和强度分布的轮廓。 TH元件具有较大的转移区域，但与ST元件相比，散焦性能更好。 与等效TH元件相比，ST元件的传输区域小两倍。 下面是典型TH / ST与等效设计叠加的比较图-例如，相同的光斑尺寸为90％。 标准的光束整形器针对特定的波长进行了优化。 使用其他波长将影响平顶光束的性能。 如果客户的应用需要多色光源，则使用多色 光束整形器 通常是更好的解决方案。 多色光束整形器可在很宽的波长范围内 …

2025年3月13日 · Topological beam shaping using Jackiw-Rebbi states enables precise control of beam profiles in nanophotonic systems.

Flat-top beams, also known as uniform or top-hat beams, are characterized by a uniform intensity distribution across the beam profile, with minimal variations at the edges. This uniformity is crucial in photonics, particularly in applications where consistent energy delivery is essential. Flat-top beams are widely used in various fields, including: