Theoretical studies on mid-infrared amplification in Ho³⁺-doped chalcogenide glass fibers

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• 作者：Shulin Wei^a ; ^b ; Yinsheng Xu^a ; ^c ; Shixun Dai^a ; ^b ; ^{daishixun@nbu.edu.cn} ; Yaxun Zhou^a ; ^b ; Changgui Lin^a ; ^c ; Peiqing Zhang^a ; ^b
• 关键词：Mid-infrared ; Ho3+ ion ; Chalcogenide glass ; Fiber amplifier ; Gain
• 刊名：Physica B
• 出版年：2013
• 出版时间：1 May, 2013
• 年：2013
• 卷：416
• 期：Complete
• 页码：64-68
• 全文大小：458 K

文摘

This paper investigated the MIR emission of Ho³⁺-doped Ge₂₀Ga₅Sb₁₀S₆₅ chalcogenide glasses upon excitation of 900 nm laser diode. The spontaneous emission probability, absorption cross-section, and emission cross-section were calculated using the Judd-Ofelt theory and the Fuchbauer-Ladenburg equation. Theoretical studies of the Ho³⁺-doped chalcogenide glass fiber amplifier operating in the MIR wavelength range, specifically around the 2.86 ¦Ìm wavelength, were performed based on the rate and light propagation equations. The results indicate that the chalcogenide glass fiber presented a larger signal MIR gain and wider MIR gain spectrum. The maximum signal gain was 36 dB and the gain width was 20 dB.