Abstract
We present what is, to the best of our knowledge, the first report on yellow-green laser generation based on the frequency doubling of the 1.1μm transitions in Nd:YAG ceramics. By employing an 885nm diode laser as the end-pumping source and a lithium triborate crystal as the frequency doubler, the highest continuous wave output powers of 1.4, 0.5, and 1.1W at 556, 558, and 561nm are achieved, respectively. These result in optical-to-optical efficiencies of 6.9%, 2.5%, and 5.4% with respect to the absorbed pump power, respectively.
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