Peterka Pavel, Kasik Ivan, Dhar Anirban, Dussardier Bernard, Blanc Wilfried
Institute of Photonics and Electronics ASCR, vvi, 18251 Prague, Czech Republic.
Opt Express. 2011 Jan 31;19(3):2773-81. doi: 10.1364/OE.19.002773.
A compact upconversion fiber laser operating around 810 nm is proposed using thulium-doped silica-based fiber with locally modified thulium environment by high alumina codoping. Using a comprehensive numerical model of thulium doped fiber we investigate performance of the proposed laser. Comparison with two other thulium hosts, fluoride glass and standard silica, is presented. Efficient lasing can be expected even for silica based fiber for specific ranges of the fiber and laser cavity parameters, especially when 3H4 lifetime is enhanced. With moderate pump power of 5 W at wavelength of 1064 nm, the predicted output power of the upconversion laser is about 2 W at 810 nm.
提出了一种紧凑的上转换光纤激光器，其工作波长约为810nm，采用了通过高铝共掺杂对铥环境进行局部改性的掺铥二氧化硅基光纤。利用掺铥光纤的综合数值模型，我们研究了所提出激光器的性能。给出了与另外两种铥基质（氟化物玻璃和标准二氧化硅）的比较。即使对于二氧化硅基光纤，在特定的光纤和激光腔参数范围内，尤其是当3H4寿命增加时，也有望实现高效激光发射。在1064nm波长处泵浦功率为5W的情况下，上转换激光器在810nm处的预测输出功率约为2W。
