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An Er3+/Yb3+ phosphate laser glass was fabricated and characterized. According to McCumber theory, the stimulated emission cross-section of Er3+ ions at 1533 nm calculated by absorption spectrum was 0.84×10-20 cm2, and the fluorescence lifetime of 4I13/2 level was 8.5 ms. Continuous wave (CW) laser operation of this Er3+/Yb3+ phosphate glass pumped by laser diode (LD) was demonstrated at room temperature. The maximum output power of 80 mW and slope efficiency of 16.5% were obtained.
An Er3 + / Yb3 + phosphate laser glass was fabricated and characterized. According to McCumber theory, the stimulated emission cross-section of Er3 + ions at 1533 nm calculated by absorption spectrum was 0.84 × 10-20 cm2, and the fluorescence lifetime of 4I13 / 2 level was 8.5 ms. Continuous wave (CW) laser operation of this Er3 + / Yb3 + phosphate glass pumped by laser diode (LD) was demonstrated at room temperature. The maximum output power of 80 mW and slope efficiency of 16.5% were obtained.