Thermal lensing in a diode-end-pumped continuous-wave self-Raman Nd-doped GdVO4 laser
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- Omatsu, T., Okida, M., Lee, A. et al. Appl. Phys. B (2012) 108: 73. doi:10.1007/s00340-012-4919-7
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We have directly measured thermal lensing in a continuous-wave Nd-doped GdVO4 self-Raman laser under diode pumping at 808 and 879 nm. Thermal lensing increased significantly when generating first-Stokes emission, this most likely originating from impurity absorption and/or excited-state absorption at high pump powers. Pumping at 879 nm significantly reduced thermal lens effects in the laser crystal compared with pumping at 808 nm.