Cryogenically cooled 946nm Nd:YAG laser

We present the first multi-Watt demonstration of a diode pumped cryogenically cooled neodymium-doped yttrium aluminum garnet (YAG) laser operating at 946 nm on the <sup>4</sup>F<sub>3/2</sub> to <sup>4</sup>I<sub>9/2</sub> transition. 3.8 W of continuo...

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Bibliographic Details
Main Authors: Yoon, S.J (Author), Mackenzie, J.I (Author)
Format: Article
Language:English
Published: 2014-03-31.
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Summary:We present the first multi-Watt demonstration of a diode pumped cryogenically cooled neodymium-doped yttrium aluminum garnet (YAG) laser operating at 946 nm on the <sup>4</sup>F<sub>3/2</sub> to <sup>4</sup>I<sub>9/2</sub> transition. 3.8 W of continuous wave output power for 12.8 W of absorbed pump was obtained with a slope efficiency of 47%. In addition, we made an extensive characterization of the spectroscopic properties around the pump and laser wavelengths over the temperature range of 77 K to 300 K to find an increase of ~2.5 times for both the absorption and emission cross sections at the lowest temperature.