Fig. 1. Output power and voltage versus operation current for 1550 nm VCSEL single emitters with laser spectrum at operation current of 10 mA shown in inset

Fig. 2. Emission wavelength of 1550 nm VCSEL at different operation temperatures when pulse width is 5 μs, repetition frequency is 1 kHz, and peak pulsed current is 10 mA

Fig. 3. Thermal resistance versus operation current under different operation temperatures for 1550 nm VCSEL single emitters

Fig. 4. Temperature distributions of hexagonal cellular array units under different unit spacings. (a) 5 μm; (b) 30 μm

Fig. 5. Temperature distributions of cross sections of emission regions of VCSEL arrays, and inner temperature of light-emitting unit in central position versus unit spacing. (a) 2D temperature distributions of light-emitting units at center position and edge when unit spacing is 30 μm; (b) temperature distributions of cross sections of emission regions of VCSEL arrays under different unit spacings; (c) inner temperature of light-emitting unit at central position versus unit spacing

Fig. 6. Laser power output versus operation current for 1550 nm VCSEL array under different operation temperatures with physical map of VCSEL array shown in inset

Fig. 7. Laser spectra of VCSEL arrays under different operation currents

Fig. 8. Peak power of pulse laser for VCSEL array versus operation current with far field spot of VCSEL array when peak power of pulse laser is 10.5 W shown in inset

Fig. 9. Light spot profiles of 1550 nm VCSEL array far field at orthogonal directions when pulse power is 10.5 W