Zhang Xuzhao, He Jie, Tang Tianhong, Teng Bing, Zhong Degao, Xu Xinguang, Wang Zhengping
Opt Express. 2018 Oct 1;26(20):26179-26187. doi: 10.1364/OE.26.026179.
The laser properties of Nd:YPO crystal were demonstrated for the first time. For a 1.2 at.% doped Nd:YPO crystal, the absorption cross-section at 803 nm, stimulated emission cross-section at 1063 nm, and fluorescence lifetime was measured to be 8.1 × 10 cm, 1.6 × 10 cm, 156 μs, respectively. With an as-grown 0.6 mm thin slice which was unpolished and uncoated, efficient diode-pumped continue-wave (CW) laser operations were realized at 1.06 and 1.3 μm wavebands. The 1063 nm output power reached 2.16 W when the absorbed pump power was 4.07 W, corresponding to an optical-to-optical efficiency of 53%, and a slope efficiency of 56.4%. The 1.3 μm laser output exhibited the simultaneous operations of dual-wavelengths, i.e. 1338 and 1347 nm. The maximum output power was 800 mW at an absorbed pump power of 3.08 W, giving an optical-to-optical efficiency of 26% and a slope efficiency of 28.2%.
首次展示了Nd:YPO晶体的激光特性。对于掺杂浓度为1.2 at.%的Nd:YPO晶体，测得其在803 nm处的吸收截面、在1063 nm处的受激发射截面和荧光寿命分别为8.1×10⁻²⁰ cm²、1.6×10⁻¹⁹ cm²、156 μs。利用一块生长态的0.6 mm薄片，该薄片未抛光且未镀膜，在1.06和1.3 μm波段实现了高效的二极管泵浦连续波（CW）激光运转。当吸收的泵浦功率为4.07 W时，1063 nm的输出功率达到2.16 W，对应的光光效率为53%，斜率效率为56.4%。1.3 μm激光输出呈现出1338和1347 nm双波长的同时运转。在吸收泵浦功率为3.08 W时，最大输出功率为800 mW，光光效率为26%，斜率效率为28.2%。
