Comparison of laser performance of Yb:YCa4O(BO3)3 crystals cut along the principal optical axes |
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| Authors: | J Liu W Han H Zhang J Wang V Petrov |
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| Institution: | (1) College of Physics, Qingdao University, Ning-Xia Road 308, Qingdao, 266071, P.R. China;(2) National Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P.R. China;(3) Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy, 2A Max-Born-Strasse, 12489 Berlin, Germany |
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| Abstract: | Efficient high-power continuous-wave laser operation is demonstrated with Yb:YCa4O(BO3)3 crystals cut along the X, Y, and Z principal axes, end pumped by a high-power diode. Highest output powers of 6.3–7.3 W are
generated, with slope efficiencies in the range of 73–83%. The standard behavior characterized by fixed linear polarization
of the output and decreasing oscillation wavelength when increasing the output coupling was observed only for the X-cut crystal;
the Y-cut crystal led to the polarization state changing and coexistence, while the Z-cut crystal resulted in dual-band laser
operation with a fixed polarization state.
PACS 42.55.Rz; 42.55.Xi |
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