Dudutis Juozas, GeČys Paulius, RaČiukaitis Gediminas
Opt Express. 2016 Dec 12;24(25):28433-28443. doi: 10.1364/OE.24.028433.
The extended focal depth of Bessel beams is a very attracting property for glass cutting applications. However, Bessel beam generation with a non-ideal conical lens induces beam pattern distortions. We present our novel results on bulk modifications of soda-lime glass using a non-ideal axicon-generated Bessel beam. Modelling of the Bessel beam pattern and experimental measurements indicated ellipticity of the central core diameter. That resulted in the formation of cracks in a transverse direction inside the bulk of glass. Furthermore, we demonstrate the possibility to control the transverse crack propagation direction, which is crucial in the case of glass cutting applications.
贝塞尔光束的扩展焦深对于玻璃切割应用来说是一个极具吸引力的特性。然而，使用非理想圆锥透镜产生贝塞尔光束会导致光束图案失真。我们展示了使用非理想轴棱锥产生的贝塞尔光束对钠钙玻璃进行体改性的新成果。贝塞尔光束图案的建模和实验测量表明中心芯直径存在椭圆率。这导致在玻璃体内横向形成裂纹。此外，我们证明了控制横向裂纹扩展方向的可能性，这在玻璃切割应用中至关重要。
