Optical character of Er/Yb co-doped P2O5-CaO-Na2O-Al2O3-AgO phosphate glass |
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| Authors: | Chengguo Ming Yin Yu Gong Zhang Qingru Wang Hua Yu Tongqing Sun Jianguo Tian |
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| Institution: | Photonics Center, College of Physical Science, Nankai University, Tianjin 300071, China The Key Laboratory of Weak Light Nonlinear Photonics , Ministry of Education, Nankai University, Tianjin 300457, China |
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| Abstract: | The up-conversion (UC) and near infrared (NIR) luminescence of Er3+/Yb3+ co-doped phosphate glass are investigated. In the UC emission range, the 523 nm, 546 nm green emissions and the 659 nm red emission are observed. With the increasing pump power, the intensity ratios of I523/I659, I546/I659 and I523/I546 increase gradually. The phenomenon is reasonably interpreted by theoretical analysis based on steady state rate equations. The emission cross section of the infrared emission at 1546 nm is larger (about 6.7 × 10− 21 cm2), which is suitable for making fiber amplifier. |
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| Keywords: | Er3+/Yb3+ co-doped Rate equation Luminescence |
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