Efficient, low threshold, cryogenic Ho:YAG laser

We report the development of an efficient, liquid-nitrogen conduction cooled Ho:YAG slab laser with good beam quality. Detailed measurements resolving the structure of the 1900-1911 nm absorption band in Ho:YAG at 77 K are presented. Stress-free conduction cooled mounting of the Ho:YAG slab was demo...

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Bibliographic Details
Published in:Optics express 2016-05, Vol.24 (11), p.11569-11577
Main Authors: Ganija, Miftar, Simakov, Nikita, Hemming, Alexander, Haub, John, Veitch, Peter, Munch, Jesper
Format: Article
Language:English
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Summary:We report the development of an efficient, liquid-nitrogen conduction cooled Ho:YAG slab laser with good beam quality. Detailed measurements resolving the structure of the 1900-1911 nm absorption band in Ho:YAG at 77 K are presented. Stress-free conduction cooled mounting of the Ho:YAG slab was demonstrated and the resulting laser operated with a large mode volume of 42 mm , a slope efficiency of 75% and a threshold of 0.84 W. To our knowledge this corresponds to the lowest reported threshold intensity for a Ho:YAG laser.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.24.011569