Yin Taoce, Mao Barerem-Melgueba, Wei Yizhen, Chen Daru
Appl Opt. 2018 Aug 10;57(23):6831-6834. doi: 10.1364/AO.57.006831.
We present, for the first time to our knowledge, a wavelength-tunable 2 μm Brillouin fiber laser based on a homemade thulium-doped fiber laser pump and a segment of highly germania-doped fiber (HGDF). The laser wavelength can be continuously tuned over 110 nm from 1920 to 2030 nm with single frequency operation, and the linewidth is estimated to be less than 0.9 kHz at 1950 nm. Benefiting from the high nonlinearity and low loss of the HGDF, a low lasing threshold of 47 mW is also achieved.
据我们所知，我们首次展示了一种基于自制掺铥光纤激光泵浦源和一段高锗掺杂光纤（HGDF）的波长可调谐2μm布里渊光纤激光器。该激光器波长可在1920至2030nm范围内连续调谐超过110nm，实现单频运转，在1950nm处线宽估计小于0.9kHz。受益于高锗掺杂光纤的高非线性和低损耗，还实现了47mW的低激射阈值。
