Chu, Shu-Chun Chen, Yun-Ting Tsai, Ko-Fan Otsuka, Kenju Media 3: Generation of high-order Hermite-Gaussian modes in end-pumped solid-state lasers for square vortex array laser beam generation Originally published in Optics Express on 26 March 2012 (oe-20-7-7128) media;Optics Express;end-pumped;Generation;oe;square vortex array laser beam generation;high-order Hermite-Gaussian modes;26 March 2012 2012-03-26
    https://opticapublishing.figshare.com/articles/media/Media_3_Generation_of_high-order_Hermite-Gaussian_modes_in_end-pumped_solid-state_lasers_for_square_vortex_array_laser_beam_generation/4945154
10.1364/OE.20.007128.m003