1.61–1.85 $\mu$m Tunable All-Fiber Raman Soliton Source Using a Phosphor-Doped Fiber Pumped by 1.56 $\mu$m Dissipative Solitons

1.61–1.85 $\mu$m Tunable All-Fiber Raman Soliton Source Using a Phosphor-Doped Fiber Pumped by 1.56 $\mu$m Dissipative Solitons

We demonstrate soliton self-frequency shift (SSFS) of more than 15.5<inline-formula><tex-math notation="LaTeX">$\%$ </tex-math></inline-formula> of the optical frequency in a phosphor-doped silica fiber for the first time. This fiber shows great potential for suppor...

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Bibliographic Details
Main Authors: Qiujun Ruan, Zhengqian Luo, Xiaojiao Wan, Runhua Yang, Zhiteng Wang, Bin Xu, Zhiping Cai, Huiying Xu
Format: Article
Language:English
Published: IEEE 2017-01-01
Series:IEEE Photonics Journal
Subjects:
Fiber laser
ultrafast laser
Raman soliton
soliton self-frequency shift.
Online Access:https://ieeexplore.ieee.org/document/7858587/
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Summary:We demonstrate soliton self-frequency shift (SSFS) of more than 15.5<inline-formula><tex-math notation="LaTeX">$\%$ </tex-math></inline-formula> of the optical frequency in a phosphor-doped silica fiber for the first time. This fiber shows great potential for supporting Raman-shift solitons above 1.8 <inline-formula><tex-math notation="LaTeX">$\mu$ </tex-math></inline-formula>m with a 1.56 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m pumping, which is superior to the SSFS previously reported in conventional single-mode silica fiber. In our experiment, when the amplified dissipative-soliton pulses at 1.56 <inline-formula><tex-math notation="LaTeX">$\mu$ </tex-math></inline-formula>m are injected into a 960 m phosphor-doped silica fiber, SSFS is efficiently initiated, and the output spectrum of Raman solitons can be continuously tuned from 1.61 to 1.85 <inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m. The Raman solitons have the shortest pulse duration of <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>800 fs and the pulse energy of <inline-formula><tex-math notation="LaTeX">$\sim$</tex-math></inline-formula>1 nJ. This 1.61&#x2013;1.85 <inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m ultrashort laser source can not only fill in the spectral gap between Er<inline-formula><tex-math notation="LaTeX">$^{3+}$</tex-math></inline-formula> and Tm<inline-formula> <tex-math notation="LaTeX">$^{3+}$</tex-math></inline-formula> emissions but has potential applications in multiphoton microscopy and optical tomography as well.
ISSN:1943-0655

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