Figure 6
From: Highly efficient thin-film 930 nm VCSEL on PDMS for biomedical applications
L–I–V characteristics comparison of the conventional and thin-film VCSELs. The red and black lines indicate the L–I–V characteristics of the conventional VCSEL and thin-film VCSEL mounted on PDMS, respectively. The threshold current and maximum output power of the conventional VCSEL are 1.09 mA and 9.57 mW at an injection current of 19.8 mA, respectively, while those for the thin-film VCSEL are 1.08 mA and 7.52 mW at an injection current of 13.9 mA, respectively. Furthermore, the slope efficiency of the conventional VCSEL is 0.69 W/A, and in the case of the thin-film VCSEL, the efficiency is 0.63 W/A.
