de Camargo Andrea S S, Nunes Luiz Antonio O, Ardila Diogenes R, Andreeta José Pedro
Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, São Paulo, Brazil.
Opt Lett. 2004 Jan 1;29(1):59-61. doi: 10.1364/ol.29.000059.
We present an investigation of the excited-state absorption and laser emission of a 1.0-at. %-Nd3+-doped YVO4 single-crystal fiber grown by the low-cost and versatile laser-heated pedestal growth technique. Efficient laser emission at 1064 nm was achieved when the fiber was pumped, in an end-pump cavity, by a Ti:sapphire laser at 808 nm. A continuous-wave threshold of 10 mW was observed with an efficiency of 42% with respect to the absorbed pump power and the maximum output power of 200 mW. These results are excellent when compared with those of a commercial bulk crystal adapted to the same cavity (48% efficiency, 250-mW maximum output power). Thus the fibers are characterized as strong candidates for the construction of compact lasers that can also be pumped by low-cost diode lasers.
我们展示了对采用低成本且通用的激光加热基座生长技术生长的1.0原子百分比Nd3+掺杂YVO4单晶光纤的激发态吸收和激光发射的研究。当该光纤在端泵浦腔中由808 nm的钛宝石激光器泵浦时，实现了1064 nm处的高效激光发射。观察到连续波阈值为10 mW，相对于吸收的泵浦功率效率为42%，最大输出功率为200 mW。与适配相同腔的商用块状晶体的结果（效率48%，最大输出功率250 mW）相比，这些结果非常出色。因此，这些光纤被视为构建紧凑激光器的有力候选者，这种激光器也可以由低成本二极管激光器泵浦。
