基于渐逝波光场对微纳粒子具有光吸附力的效应,提出了利用熔融拉锥光纤吸附沉积半导体量子点的实验研究。以波长为980 nm的激光作为光源,在熔融拉锥光纤表面成功吸附沉积了高密度硫化铅(Pb S)量子点薄膜。通过光抽运,在吸附沉积Pb S量子点的熔锥光纤中观测到Pb S量子点光致发光光谱,并实现了在1550 nm波段的光放大,增益达6.8 d B。 Based on the effect of evanescent evanescent wave field on the adsorption capacity of micro / nano particles, an experimental study on the absorption and deposition of semiconductor quantum dots using fused taper fiber was proposed. With the laser wavelength of 980 nm as the light source, a high density lead sulfide (PbS) quantum dot film was successfully deposited on the surface of the fused taper fiber. By photon pumping, the photoluminescence spectrum of PbS QDs was observed in the fused cone fiber adsorbed and deposited PbS quantum dots, and the light amplification in the 1550 nm band was achieved with a gain of 6.8 dB.