Fig. 1. Schematic of collimation and focusing of pump module

Fig. 2. Output characteristics of VCSEL array. (a) Output pulse energy of VCSEL laser versus working current under different temperatures; (b) central wavelength of VCSEL laser versus temperature under different working currents

Fig. 3. Set-up diagram of VCSEL side-pumped solid-state laser

Fig. 4. Output beam quality measurement

Fig. 5. Output beam near-field facula

Fig. 6. Pulse wavelength diagram

Fig. 7. Threshold pump energy versus VCSEL heat sink temperature

Fig. 8. Output energy recording of solid-state laser pumped by VCSEL in 1 h

Fig. 9. Output energy recording of solid-state laser pumped by LD in 1 h