[3] Y Huang, Q Wang G, Y Zhang G et al. Optik, 170, 166(2018).
[7] R Arndt. Journal of Applied Physics, 36, 2522(2004).
[9] J More J. Lecture Notes in Mathematics, Springer, 630(1977).
[10] O Witzel, A Klein, C Meffert et al. Optics Express, 21, 19951(2013).