The observed peaks corresponding to the formation of hexagonal phase of CuSe were indexed according to hexagonal structure. Knowing the wavelength (λ), full width at half maximum (FWHM) of the peaks ...

In this paper, a method to generate dual asymmetric non-diffracting beams by a transmission metasurface is introduced. A metasurface is regularly divided into two independent complementary sub-arrays.

We studied the second harmonic generation with non-diffracting beams. We provided analytical calculations that explains observed experimental and numerical results, demonstrating that when all the ...