Optimal oxide-aperture for improving the power conversion efficiency of VCSEL arrays*
Wang Wen-Juan, Li Chong, Zhou Hong-Yi, Wu Hua, Luan Xin-Xin, Shi Lei, Guo Xia†
       
Experimental data and the numerical fitting curves of (a) the differential resistance of each element in arrays, (b) the external differential quantum efficiency, and (c) the threshold current versus the oxide-aperture. The data are the measured data and the error bars represent the standard deviation of arrays.