Acta Optica Sinica, Volume. 36, Issue 3, 319001(2016)
Mid-Infrared Supercontinuum Generation with Highly Germanium-Doped Silica Fiber
Mid-infrared supercontinuum generation is demonstrated by using a 75 % germanium-doped silica fiber pumped by a 2 μm Q- switched thulium- doped fiber laser with pulse width of 50 ns. The free space coupling efficiency from the pump laser to the germanium-doped fiber is enhanced by fusion-splicing a 100~200 μm long multimode fiber. Length of germanium-doped fiber is optimized. Broadband supercontinuum generation ranging from 1.9 μm to 2.9 μm with 10 dB and 20 dB bandwidths of 950 nm and 980 nm, respectively. The 2.9 μm long wavelength limit is close to the record reported so far for highly germanium-doped fiber based supercontinuum generation sources.
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Zhu Lei, Wang Lulu, Dong Xinyong, Shen Ping, Su Haibin. Mid-Infrared Supercontinuum Generation with Highly Germanium-Doped Silica Fiber[J]. Acta Optica Sinica, 2016, 36(3): 319001
Category: Nonlinear Optics
Received: Aug. 24, 2015
Accepted: --
Published Online: Mar. 3, 2016
The Author Email: Lei Zhu (rsdyl12742@sina.com)