Effective Selection of the TEM00-Mode in a Powerful Nd:YVO4-Laser With the 808 nm Diode Pumping

The problems of an effective selection of the TEM 00 -mode and thermo-optical distortions in a Nd:YVO 4 laser with the longitudinal diode pumping are considered. In an experiment with a 40-watt single-end pumping of the composite YVO 4 /Nd:YVO 4 crystal, the single-mode output power of 24 W at an op...

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Bibliographic Details
Published in:Russian physics journal 2014-03, Vol.56 (11), p.1213-1218
Main Authors: Donin, V. I., Yakovin, D. V., Yakovin, М. D.
Format: Article
Language:English
Subjects:
Condensed Matter Physics
Hadrons
Heavy Ions
Lasers
Mathematical and Computational Physics
Nuclear Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Theoretical
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Summary:The problems of an effective selection of the TEM 00 -mode and thermo-optical distortions in a Nd:YVO 4 laser with the longitudinal diode pumping are considered. In an experiment with a 40-watt single-end pumping of the composite YVO 4 /Nd:YVO 4 crystal, the single-mode output power of 24 W at an optical efficiency of η opt  = 57.1% (the slope efficiency of 63.3%) is obtained. Apparently, this is the greatest power for lasers based on the Nd-doped yttrium orthovanadate with the longitudinal pumping at λ = 808 nm from one end of the active crystal. Evaluations of the thermal effects show that when using the Nd:YVO 4 -crystal (the length 20 mm, the diameter 3 mm, and the doping of 0.27 atomic %) having two undoped ends and the double-end diode pumping with total power of 170 W, one can expect obtaining a 100-watt level of the output power in the TEM 00 -mode from a single active element.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-014-0164-3