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Wavelength-tunable, dual-wavelength Q-switched Ho3+-doped ZBLAN fiber laser at 1.2 µm

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Abstract

Wavelength-flexible Q-switched Ho3+-doped ZBLAN fiber laser at 1.2 µm is experimentally investigated for the first time. The gain medium is Ho3+-doped ZBLAN fiber, which is pumped by a 1137-nm Raman fiber laser. Nonlinear polarization rotation technique works as the saturable absorber in the ring cavity to provide the intensity modulation. An artificial Lyot filter is inserted into the cavity and its periodic transmission spectrum varied with the polarization allows for the tunability and multi-wavelength operation of the laser. As a result, the laser spectrum tunable from 1190 to 1196 nm and dual-wavelength Q-switched pulses are observed. At a pump power of 2.01 W, stable Q-switched pulse train with the pulse duration of 0.76 µs and pulse energy of 0.62 µJ is achieved.

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Acknowledgements

This work is supported in part by National Natural Science Foundation of China (61378026) and Technology Research Initiative Fund (TRIF) Photonics Initiative of University of Arizona.

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Authors and Affiliations

  1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai Key Laboratory of Solid State Laser and Application, Qinghe Road 390, Jiading, Shanghai, 201800, China

    Xuezong Yang, Lei Zhang & Yan Feng

  2. University of the Chinese Academy of Sciences, Beijing, 100049, China

    Xuezong Yang

  3. College of Optical Sciences, The University of Arizona, 1630 East University Boulevard, Tucson, AZ, 85721, USA

    Xiushan Zhu

Authors
  1. Xuezong Yang
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  2. Lei Zhang
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  3. Xiushan Zhu
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  4. Yan Feng
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Correspondence to Yan Feng.

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Yang, X., Zhang, L., Zhu, X. et al. Wavelength-tunable, dual-wavelength Q-switched Ho3+-doped ZBLAN fiber laser at 1.2 µm. Appl. Phys. B 124, 198 (2018). https://doi.org/10.1007/s00340-018-7071-1

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  • DOI: https://doi.org/10.1007/s00340-018-7071-1

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