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9 December 2014 Experimental research on thulium-doped fiber ASE characteristics pumped by 976nm LD
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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, Qingsong Jia, Hongwei Sun, Jian Han, Peng Zhang, Tianshu Wang, and 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);


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