Spectral evolution of NIR luminescence in a Yb3+-doped photonic crystal fiber prepared by non-chemical vapor deposition
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摘要:
Silica-based Yb3+-doped glass is prepared by non-chemical vapor deposition.The drawn photonic crystal fiber (PCF) has a strong absorption at 976 nm and emission wavelength of approximately 1 037 nm.The intensity and spectral lineshape of the near infrared (NIR) luminescence of the Yb3+-doped PCF are recorded and discussed in terms of excitation power,excitation wavelength,fiber length,and Yb3+ ion concentration.The emission intensifies as the excitation power and Yb3+ ion concentration increase.The intensity of the shorter wavelength side of the luminescence spectrum decreases as the length of the PCF increases.