9 December 2014 Experimental research on thulium-doped fiber ASE characteristics pumped by 976nm LD
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Abstract
In this paper, a segment of thulium-doped fiber is pumped by a 976nm laser diode.Broadband gain at centerwavelength of 1953nm is achieved. The maximum amplified spontaneous emission bandwidth is 8nm. Simultaneously, self- oscillation of wavelength spacing 0.073nm is observed. The output power and self- oscillation modes increase with pump power increasing and wavelength spacing of self-oscillation is unchanged.The relation between fiber length and output power at pump power 400mW is analyzed. Higher output power can be abtained by selecting a appropriate fiber length when pump power is unchanged. Through the experiment, a weak absorption band of thulium-doped fiber near 976nm is verified. The structure can be used as narrow linewidth broadband source near 1950nm with the characteristic of low cost, simple structure and good stability.
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Wanzhuo Ma, Wanzhuo Ma, Qingsong Jia, Qingsong Jia, Hongwei Sun, Hongwei Sun, Jian Han, Jian Han, Peng Zhang, Peng Zhang, Tianshu Wang, Tianshu Wang, Huilin Jiang, Huilin Jiang, "Experimental research on thulium-doped fiber ASE characteristics pumped by 976nm LD", Proc. SPIE 9294, International Symposium on Optoelectronic Technology and Application 2014: Development and Application of High Power Lasers, 92940B (9 December 2014); doi: 10.1117/12.2072256; https://doi.org/10.1117/12.2072256
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