The second stage, based on diffractive optics, splits further the sub-beams before they enter into the laser processing heads. Each resulting bundle of beamlets is then focused on the workpiece through a single focusing lens. It is a crucial part of many optical experimental and measurement systems, such as interferometers, also finding widespread application in fibre optic telecommunications. In its. The introduction of a second beam splitter, often denoted as BS2, into an optical system signifies a crucial step in the evolution of its functionality. The ability to trace multiple transmitted and reflected ray paths simultaneously, along with the ability. In this paper, we describe a 2-stage laser beam-splitting strategy based on both polarization re-fractive and diffractive optics, and its implementation into independent modules.
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