Lin Zhiquan, Yu Chunlei, He Dongbing, Zhang Lei, Feng Suya, Chen Danping, Hu Lili
Appl Opt. 2017 Aug 1;56(22):6230-6234. doi: 10.1364/AO.56.006230.
This work reports the generation of an optical-power tunable 1 μm dual-wavelength fiber laser in Nd/Yb co-doped phosphate glass fiber under 970 nm and 808 nm laser diode pumping. A bidirectional free-space pump laser setup was adopted. An optical-power tunable dual-wavelength laser can be easily realized by the control of 808 nm pump power magnitude. Based on a series of laser tests under different pump conditions and theoretical calculation of the Nd→Yb energy transfer efficiency, the control mechanism was found to be the stimulated emission modulation of Nd on Yb lasing. This property is helpful to enhance the knowledge of the Nd/Yb co-doping system.
这项工作报道了在970纳米和808纳米激光二极管泵浦下，在掺钕/镱磷酸盐玻璃光纤中产生光功率可调谐的1微米双波长光纤激光器。采用了双向自由空间泵浦激光装置。通过控制808纳米泵浦功率大小，可以轻松实现光功率可调谐双波长激光器。基于不同泵浦条件下的一系列激光测试以及钕到镱能量转移效率的理论计算，发现控制机制是钕对镱激光的受激发射调制。这一特性有助于增进对钕/镱共掺杂系统的了解。
