| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Efficient High Power Ho,Tm:GdVO4 Laser |
| WANG Yue-Zhu, ZHU Guo-Li**, JU You-Lun, YAO Bao-Quan
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National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001
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| Cite this article: |
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WANG Yue-Zhu, ZHU Guo-Li, JU You-Lun et al 2011 Chin. Phys. Lett. 28 094211 |
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Abstract We report a 22.3 W cw diode-pumped cryogenic Ho(0.5at.%),Tm(at.5%):GdVO4 laser at a wavelength of 2.05 µm. It is pumped by two fiber−coupled laser diodes with a fiber core diameter of 0.4 mm, both of which provide 42 W pump power near 802 nm. A cw output power of 22.3 W was obtained at the pump power of 51.0 W, corresponding to an optical-to-optical conversion efficiency of 43.7% when the ratio of the pump beam to oscillating laser beam in the crystal was ∼1.33:1. The M2 factor was found to be 2.0 under an output power of 16.5 W.
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| Keywords:
42.55.Xi
42.60.Pk
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Received: 27 June 2011
Published: 30 August 2011
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