914 nm LD end-pumped 31.8 W high beam quality E-O Q-switched Nd:YVO4 laser without intracavity polarizer

Passively mode-locked high power Nd:GdVO4laser with direct in-band pumping at 912 nm

“…One of the proposed solutions to effectively alleviate this problem was based on the reduction of heating within the laser crystal. This was achieved by pumping the laser at longer wavelengths (such as 880 nm, 888 nm, and 912 nm) [20,[24][25][26][27][28][29][30][31][32][33][34][35] instead of the standard pumping at 808 nm. The observed decrease in thermal lensing effect was mainly attributed to the reduction of quantum defect (energy difference between the absorbed pump and laser output photons).…”

Design of LD in-band direct-pumping side surface polished micro-rod Nd:YVO 4 laser

“…Some ways were investigated to diminish the thermal load of the crystal. One way is to reduce the quantum defect with in-band direct pumping [3] to the upper lasing level such as at 880 nm [4] or 888 nm [5] instead of 808 nm. Splitting the thermal load with multiple crystals [6] is also a solution.…”