| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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A Dual-Crystal Cavity Ho,Tm:GdVO4 Laser |
| ZHU Guo-Li**, JU You-Lun, YAO Bao-Quan, WANG Yue-Zhu |
| National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001 |
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| Cite this article: |
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ZHU Guo-Li, JU You-Lun, YAO Bao-Quan et al 2012 Chin. Phys. Lett. 29 024204 |
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Abstract We report a 31.2 W cw diode-pumped cryogenic Ho(0.4at.%),Tm(4at.%):GdVO4 laser in a dual−crystal cavity. The pumping sources are two fiber-coupled laser diodes with a fiber core diameter of 0.4 mm, both of which can supply 42 W near 802 nm. With an incident pump power of 70.3 W at 802.4 nm, a cw output power of 31.2 W at 2.05 µm is attained, corresponding to an optical−to-optical conversion efficiency of 44.4%. The M2 factor is measured as ∼1.3 under an output power of 20 W.
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| Keywords:
42.55.Xi
42.60.Pk
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Received: 26 October 2011
Published: 11 March 2012
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