具有中红外光通道的生物探针的制备及性能  

Fabrication and Characterization of Bioprobe with Mid-Infrared Light Channel

作　　者：彭传迪 郑俊哲 朱晓松[1] 常超 石艺尉[1] Peng Chuandi;Zheng Junzhe;Zhu Xiaosong;Chang Chao;Shi Yiwei(Key Laboratory for Information Science of Electromagnetic Waves(MoE),Fudan University,Shanghai 200433,China;Advanced Interdisciplinary Technology Research Center,National Inyiovationbistitute of Defense Technologyt Academy of Military Sciences,Beijing 100071,China)

机构地区：[1]复旦大学电磁波信息科学教育部重点实验室,上海200433 [2]军事科学院国防科技创新研究院前沿交叉技术研究中心,北京100071

出　　处：《光学学报》2019年第12期322-330,共9页Acta Optica Sinica

摘　　要：提出一种基于空芯光纤,兼具导电和中远红外传光性能的生物探针,实现波长5~10μm处光的低损耗传输。采用环烯烃聚合物(COP)对探针前端进行水密封,并对封口工艺进行设计和优化。采用波长5.1μm的光源测得长度为20 cm、内径/外径(ID/OD)为0.7 mm/1.5 mm探针的损耗为1.38 dB。通过控制封口工艺,制备不同形状的COP封口窗片,实现对输出光束的调控。通过测量不同形状封口窗片的输出光斑,分析探针的焦距及光束远场发散角,为神经科学研究和生物医学应用提供更多的途径和手段。Herein, a bioprobe based on hollow fibers with electrical and optical delivery channels is proposed to realize low attenuation transmission of mid-infrared light at the wavelength band ranging from 5 μm to 10 μm. Cyclic olefin polymer(COP) is used to isolate the front-end of the probe from water and the necessary sealing technology is designed and optimized. The loss of bioprobe with length of 20 cm and inner diameter/outer diameter(ID/OD) of 0.7 mm/1.5 mm is 1.38 dB at a wavelength of 5.1 μm. By controlling the sealing process, COP sealed windows with different shapes are fabricated to modify the output beam. The focal length and far-field divergence angle for these different configurations are analyzed by measuring the output beam profiles. This approach will provide more ways and means for neuroscience research and biomedical application.

关 键 词：光学器件 生物探针 中红外 空芯光纤 封口窗片 光束调控 

分 类 号：TN214[电子电信—物理电子学]