Abstract
A comparison of laser emission in highly doped (2.4- and 3.5-at. %) Nd:YAG crystals is made for conventional 808-nm pumping in and resonant pumping at 885 nm in the band that collects the hot transitions and of absorption. A systematic improvement of the laser parameters (slope efficiency and emission threshold) in absorbed power under hot-band pumping is observed, as expected from the reduction of the pump’s quantum defect. Together with the expected reduction of heat generation, resonant hot-band pumping in concentrated components shows prospect for greatly increasing the emission capabilities of the Nd:YAG lasers.
© 2001 Optical Society of America
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