近赤外広帯域光源として、ガラス蛍光体とLEDを組み合わせた光源を作製した。ガラス蛍光体として、Yb~(3＋)，Nd~(3＋)共添加Bi_2O_3-B_2O_3-Sb_2O_3ガラスを作製し、Yb~(3＋)濃度、Nd~(3＋)濃度、ガラス厚さの最適化、ガラス蛍光体とLEDの接着、ガラス蛍光体の側面から放射される近赤外光を反射させることにより、高出力化を行った。その結果、3.8mWの光出力を達成した。また、Sm~(3＋)添加Bi_2O_3-B_2O_3-Sb_2O_3ガラスとYb~(3＋)，Nd~(3＋)共添加Bi_2O_3-B_2O_3-Sb_2O_3ガラスを積層することによって、発光波長帯を拡大し、860nm～1200nmの広帯域発光を実現した。%We have fabricated a near-infrared light source by combining a glass phosphor and an LED. We synthesized Yb~(3+), Nd~(3+) co-doped Bi_2O_3-B_2O_3-Sb_2O_3 glass as the glass phosphor. By optimization of Yb~(3+) concentration, Nd~(3+) concentration, and thickness of the glass phosphor, by bonding the LED and the glass phosphor, and by the reflection of near-infrared light radiated on the side of the glass phosphor, we tried to increase the output power. As a result, we achieved the output power of 3.8 mW. We also tried to increase the spectral width by stacking Sm~(3+) doped Bi_2O_3-B_2O_3-Sb_2O_3 glass underneath the Yb~(3+), Nd~(3+) co-doped Bi_2O_3-B_2O_3-Sb_2O_3 glass. We observed wideband luminescence from 860 nm to 1200 nm.
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