OFS Laboratories, 19 Schoolhouse Road, Suite 105, Somerset, New Jersey 08873, USA.
Opt Lett. 2010 Sep 15;35(18):3069-71. doi: 10.1364/OL.35.003069.
We demonstrate a Raman fiber laser with an operating wavelength of 1480 nm and record output power of 81 W. High-power operation is enabled by a long-period grating used to frustrate backward lasing at the Stokes wavelength in the Yb-doped fiber amplifier. A cascaded Raman fiber with a long-wavelength fundamental mode cutoff enables efficient multiple Stokes scattering from 1117 to 1480 nm while preventing further unwanted scattering to 1590 nm.
我们展示了一种工作波长为 1480nm 的拉曼光纤激光器，记录的输出功率为 81W。通过使用长周期光栅来抑制掺镱光纤放大器中斯托克斯波长的反向激光，实现了高功率运行。级联的长波长基模截止拉曼光纤可实现从 1117nm 到 1480nm 的高效多斯托克斯散射，同时防止进一步向 1590nm 的不需要的散射。
