Single-frequency fiber ring laser with 1Woutput power at 1.5µm
Single-frequency fiber ring laser with 1Woutput power at 1.5µm
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DOI：
10.1364/opex.13.003179
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发表时间：
2005-04
期刊：
影响因子：
3.8
通讯作者：
A. Polynkin;P. Polynkin;M. Mansuripur;N. Peyghambarian
中科院分区：
文献类型：
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作者：
A. Polynkin;P. Polynkin;M. Mansuripur;N. Peyghambarian
我们报道了一种输出功率为1W的1.5微米单频光纤激光器，据我们所知，这是迄今报道的单频光纤激光器最高功率的五倍。采用短单向环形腔方法，消除了驻波激光器设计中的空间增益烧孔现象。环形腔内的重掺杂磷酸盐光纤作为激光器的激活介质。在输出功率达700 mW的情况下，采用可调耦合腔方法完全消除了纵模跳变。在更高的功率水平下，激光器仍然以单纵模振荡，但很少出现以每分钟几跳的速率出现的模式跳跃。与瓦级单频放大源相比，我们的方法更简单，并且提供了更好的噪声性能。
We report a single-frequency fiber laser with 1W output power at 1.5µm which is to our knowledge, five times the highest power from a single-frequency fiber laser reported to-date. The short unidirectional ring cavity approach is used to eliminate the spatial gain hole-burning associated with the standing-wave laser designs. A heavily-doped phosphate fiber inside the ring resonator serves as the active medium of the laser. Up to 700mW of output power, the longitudinal mode hops have been completely eliminated by using the adjustable coupled-cavity approach. At higher power levels, the laser still oscillates at a single longitudinal mode, but with infrequent mode hops that occur at a rate of few hops per minute. Compared to the Watt-level single-frequency amplified sources, our approach is simpler and offers better noise performance.