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  • Received: Feb. 21, 2020

    Accepted: May. 19, 2020

    Posted: May. 19, 2020

    Published Online: Jun. 15, 2020

    The Author Email: Jiangming Xu (jmxu1998@163.com), Pu Zhou (zhoupu203@163.com)

    DOI: 10.1364/PRJ.390950

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    Yang Zhang, Jiangming Xu, Jun Ye, Jiaxin Song, Tianfu Yao, Pu Zhou. Ultralow-quantum-defect Raman laser based on the boson peak in phosphosilicate fiber[J]. Photonics Research, 2020, 8(7): 07001155

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(a) Typical Raman gain spectrum of phosphosilicate fiber [27]. (b) The Raman output spectra of the phosphosilicate fiber we used under different pump powers.

Fig. 1. (a) Typical Raman gain spectrum of phosphosilicate fiber [27]. (b) The Raman output spectra of the phosphosilicate fiber we used under different pump powers.

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Experimental setup of our low-quantum-defect Raman fiber laser. ASE, amplified spontaneous emission; HR, highly reflective; FBG, fiber Bragg grating; LR, low reflective.

Fig. 2. Experimental setup of our low-quantum-defect Raman fiber laser. ASE, amplified spontaneous emission; HR, highly reflective; FBG, fiber Bragg grating; LR, low reflective.

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(a) Spectral evolution of the oscillator-pumped Raman fiber laser. (b) Spectral evolution of the ASE-source-pumped Raman fiber laser. (c) Temporal behaviors of the oscillator and ASE source under the same power level.

Fig. 3. (a) Spectral evolution of the oscillator-pumped Raman fiber laser. (b) Spectral evolution of the ASE-source-pumped Raman fiber laser. (c) Temporal behaviors of the oscillator and ASE source under the same power level.

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(a) Total output, Raman output, and residual pump power of the ASE-source-pumped Raman fiber laser as a function of pump power. (b) Output spectrum of the ASE-pumped Raman fiber laser with a spectral purity of 96.03% (inset: the corresponding output spectrum in linear scale).

Fig. 4. (a) Total output, Raman output, and residual pump power of the ASE-source-pumped Raman fiber laser as a function of pump power. (b) Output spectrum of the ASE-pumped Raman fiber laser with a spectral purity of 96.03% (inset: the corresponding output spectrum in linear scale).

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(a) Threshold power, maximum Raman output power, and (b) corresponding output spectra at the same pump level of the ASE-source-pumped Raman fiber laser under different pump wavelengths.

Fig. 5. (a) Threshold power, maximum Raman output power, and (b) corresponding output spectra at the same pump level of the ASE-source-pumped Raman fiber laser under different pump wavelengths.

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