论文信息 - Modeling of Cascade Lasing in Dy : Chalcogenide Glass Fiber Laser With Efficient Output at 4.5 $\mu$m

Modeling of Cascade Lasing in Dy : Chalcogenide Glass Fiber Laser With Efficient Output at 4.5 $\mu$m

The performance of a continuous-wave Dy:GeAsGaSe chalcogenide glass fiber laser operating on the 6H11/2 rarr 6H13/2 transition at 4.2-4.7 mum is studied using numerical modeling. A double-clad fiber geometry is assumed, with direct pumping of the 6H11/2 level at 1.7 mum. It is shown that simultaneous lasing on the 6H13/2 rarr 6H15/2 transition serves to effectively depopulate the 6H11/2 level and significantly improve the efficiency and power scalability. A slope efficiency of 0.16 is calculated when the fiber loss is 1 dB/m. For efficient operation, it is necessary to keep the fiber loss below ap5 dB/m.

[1] Tetsuhiko Ikegami,et al. Optical fiber amplifiers , 1991, Other Conferences.

[2] A. Bjarklev. Optical Fiber Amplifiers: Design and System Applications , 1993 .

[3] Norman P. Barnes,et al. Room temperature Dy:YLF laser operation at 4.34 mu m , 1991 .

[4] D. Mccumber,et al. Einstein Relations Connecting Broadband Emission and Absorption Spectra , 1964 .

[5] Leslie Brandon Shaw,et al. Mid-wave IR and long-wave IR laser potential of rare-earth doped chalcogenide glass fiber , 2001 .

[6] Leslie Brandon Shaw,et al. Rare-earth doped selenide glasses and fibers for active applications in the near and mid-IR , 1999 .

[7] S A Payne,et al. Room-temperature laser action at 4.34.4 mum in CaGa(2)S(4):Dy(3+). , 1999, Optics letters.