Tsang Yuen, Richards Billy, Binks David, Lousteau Joris, Jha Animesh
Photon Physics Group, School of Physics and Astronomy, The University of Manchester, Manchester, UK.
Opt Lett. 2008 Jun 1;33(11):1282-4. doi: 10.1364/ol.33.001282.
Continuous-wave and Q-switched lasing from a Tm(3+)/Ho(3+) codoped tellurite fiber is reported. An Yb(3+)/Er(3+)-doped silica fiber laser operating at 1.6 microm was used as an in-band pump source, exciting the Tm(3+) ions into the (3)F(4) level. Energy is then nonradiatively transferred to the upper laser level, the (5)I(7) state of Ho(3+). The laser transition is from the (5)I(7) level to the (5)I(8) level, and the resulting emission is at 2.1 microm. For continuous wave operation, the slope efficiency was 62% and the threshold 0.1 W; the maximum output demonstrated was 0.16 W. Mechanical Q switching resulted in a pulse of 0.65 microJ energy and 160 ns duration at a repetition rate of 19.4 kHz.
报道了掺Tm(3+)/Ho(3+)碲酸盐光纤的连续波和调Q激光。一个工作在1.6微米的掺Yb(3+)/Er(3+)石英光纤激光器被用作带内泵浦源，将Tm(3+)离子激发到(3)F(4)能级。然后能量通过非辐射方式转移到上激光能级，即Ho(3+)的(5)I(7)态。激光跃迁是从(5)I(7)能级到(5)I(8)能级，产生的发射波长为2.1微米。对于连续波运转，斜率效率为62%，阈值为0.1瓦；展示的最大输出功率为0.16瓦。机械调Q产生了能量为0.65微焦、脉宽为160纳秒、重复频率为19.4千赫的脉冲。
