Influence of pump wavelength on the laser performance of Yb:KLu(WO4)2 crystal |
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| Authors: | Junhai Liu Wenjuan Han Huaijin Zhang Jiyang Wang Valentin Petrov |
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| Institution: | aCollege of Physics, Qingdao University, Ning-Xia Road 308, Qingdao 266071, China;bState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;cMax-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy, 2A Max-Born-Street, D-12489 Berlin, Germany |
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| Abstract: | By employing a tunable Ti:sapphire laser, we conducted an investigation into the effects of pump wavelength deviation on the laser performance of Yb:KLu(WO4)2 crystal. Pumping efficiencies exceeding 70% could be reached under lasing conditions with a 3-mm crystal of Yb concentration of 5.24 at.%, when the pumping wavelength was within the main absorption band centered at 981 nm extending from 974 to 990 nm. For different pumping wavelengths, the laser exhibited a single output–input relation with respect to absorbed pump power, giving an average slope efficiency amounting to 51%. |
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| Keywords: | Pumping efficiency Pump wavelength Laser performance Yb:KLuW |
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