Abstract The emergence of high-powered femtosecond lasers presents the opportunity for large volume processing inside of transparent materials. wherein a myriad of nonlinear optical and aberration effects typically convolves to distort the focused beam shape. In this paper. convex and concave conical phase fronts were imposed on femtosecond laser beams and focussed into wide-bandgap g... https://www.halohealthcarers.shop/product-category/sleep-supplements/