The third near infrared stimulated-emission spectral range of Nd:YAG ceramics at room temperature has been demonstrated. For the 4 F 3/2 → 4 I 9/2 transition emitting at 946 nm 1.35 W laser output have been achieved under 808 nm laser diode pumping at more than 20% efficiency similar as for crystalline material.
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Strohmaier et al. (2005) studied this question.
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