End-pumping Tm,Ho,Ce:NaY(WO4)2 crystal laser at 2.07 µm and the up-conversion repressed
2010; IOP Publishing; Volume: 7; Issue: 12 Linguagem: Inglês
10.1002/lapl.201010082
ISSN1612-202X
AutoresF. G. Yang, Feixue Yan, Zhiwei You, Chaoyang Tu, C.L. Sun, Yuansheng Wang, Ziyao Zhu, J.F. Li,
Tópico(s)Laser Design and Applications
ResumoWe presented an infrared laser output at 2.07 μm with Tm,Ho,Ce:NaY(WO4)2 single crystal end-pumped by 795 nm laser diode at room temperature. The crystal was grown by the Czochralski method with the concentrations of 5 at.% Tm3+, 1 at.% Ho3+, and 30 at.% Ce3+. The highest output power was up to 0.2 W corresponding to the pumping power of 50 W and the threshold was about 40 W at 293 K. Especially, the introduction of Ce3+ brought about a novel phenomenon. End-pumping with the 795 nm LD, we surprisingly found the up-conversion was repressed heavily and the green emission disappeared thoroughly in Tm,Ho,Ce:NaY(WO4)2 crystal, which was particularly different from the crystal Tm,Ho:NaY(WO4)2, where the green emission was obvious and weakened the sensitized transition energy.
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