Pruneri, V., Koch, R., Kazansky, P.G., Clarkson, W.A., Russell, P.St.J. and Hanna, D.C.
49mW of cw blue light generated by first-order quasi-phase-matched frequency doubling of a diode-pumped 946nm Nd:YAG laser
Optics Letters, 20, (23), . (doi:10.1364/OL.20.002375).
We report highly efficient blue-light generation by frequency doubling of a high-power cw diode-pumped 946-nm Nd:YAG laser. A periodically poled lithium niobate crystal, 6 mm long and with a period of 4.6 µm, was used in the experiment. 49 mW of blue light was generated with a conversion efficiency of 4.6%. The measured effective nonlinear coefficient (d,eff~19pm/V) and the temperature-bandwidth (Delta.T~3°C) of the crystal are close to the theoretical limits.
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