Jackson Stuart D
Optical Fibre Technology Centre, Australian Photonics Cooperative Research Centre, The University of Sydney, 206 National Innovation Centre, Australian Technology Park, 1430 Eveleigh, Sydney, Australia.
Opt Lett. 2003 Nov 15;28(22):2192-4. doi: 10.1364/ol.28.002192.
Unidirectional dual-wavelength pumping at 805 and 975 nm of a Tm(3+)-doped silica double-clad fiber laser that has been codoped with Yb(3+) is demonstrated. With equal 2-wt. % concentrations of the Tm(3+) and Yb(3+) ions, slope efficiencies of 49% (57%) and 35% (40%) with respect to the launched (absorbed) pump power of the 805- and 975-nm pump wavelengths, respectively, were obtained. Efficient Yb(3+) --> Tm(3+) energy transfer and efficient cross relaxation combined with minimal upconversion losses were thus operating. At the maximum output power of 18 W, the fiber laser operated at a center wavelength of 2050 nm.
演示了在掺有Yb(3+)的掺Tm(3+)石英双包层光纤激光器中，在805和975 nm处进行单向双波长泵浦。当Tm(3+)和Yb(3+)离子的浓度均为2 wt.%时，相对于805 nm和975 nm泵浦波长的发射（吸收）泵浦功率，斜率效率分别为49%（57%）和35%（40%）。由此实现了高效的Yb(3+)→Tm(3+)能量转移、高效的交叉弛豫以及最小的上转换损耗。在18 W的最大输出功率下，光纤激光器的中心波长为2050 nm。
