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Colloidal PbSe quantum dot-solution-filled liquid-core optical fiber for 1.55 μm telecommunication wavelengths

机译：电信波长为1.55μm的胶体PbSe量子点溶液填充液芯光纤

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We have studied the optical properties of PbSe colloidal quantum dot-solution filled hollow core multimode silica waveguides as a function of quantum dot-solution concentration, waveguide length, optical pump power and choice of organic solvent in order to establish the conditions to maximize near infrared spontaneous emission intensities. The optical performance was compared and showed good agreement with a simple three level system model for the quantum dots confined in an optical waveguide. Near infrared absorption-free solvent of tetrachlorethylene was confirmed to be a good candidate for the waveguide medium due to the enhancement of output intensity from the liquid-core fiber compared to the performance in toluene-based fiber. This approach demonstrates a useful method for early characterization of quantum dot materials in a waveguide test-bed with minimal material processing on the colloidal nanoparticles.
机译：我们研究了PbSe胶体量子点溶液填充的空心多模二氧化硅波导的光学性质与量子点溶液浓度，波导长度，光泵浦功率和有机溶剂选择的关系，以建立使近红外最大化的条件自发发射强度。对光学性能进行了比较，并显示出与用于光波导中的量子点的简单三级系统模型的良好一致性。四氯乙烯的近红外无吸收溶剂被证实是波导介质的良好候选物，因为与甲苯基纤维相比，液芯纤维的输出强度有所提高。该方法展示了一种有用的方法，用于在波导测试台中早期表征量子点材料，而对胶体纳米颗粒的材料处理最少。

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