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†
       
Schematic cross-sectional view of the selectively oxidized-confined top-emitting VCSEL, where D a is the oxide-aperture diameter, R L the lateral resistance, R V and are the vertical resistances of p-DBR and n-DBR, respectively, and the differential resistance of each element in VCSEL arrays is the sum of series-connected resistances R L , R V , and .[ 12 , 13 ]