Fluidic lens by using thermal lens effect
Fluidic lens by using thermal lens effect
复制标题
利用热透镜效应的流体透镜
DOI：
10.1016/j.ijheatmasstransfer.2012.07.024
复制
发表时间：
2012
影响因子：
5.2
通讯作者：
K. Fushinobu
中科院分区：
文献类型：
--
作者：
H.D. Doan;Y. Akamine;K. Fushinobu
本研究提出了一种基于热透镜效应的新型射流透镜。从实验和理论上研究了双热透镜系统中泵浦功率和泵浦光强分布对探测光束分布的影响。建立了非均匀介质中的热传导、自然对流和光线追踪模型，对热透镜系统的特性进行了预测。数值结果表明，与高斯泵浦光束相比，均匀泵浦光束在减小球差方面具有优势。用均匀泵浦光束进行了实验，验证了数值预测的正确性。实验结果与计算结果吻合较好。最后，通过改变泵浦功率来调节系统的焦距。
This research presents a novel fluidic lens based on thermal lens effect. Effects of the pump power and the pump beam intensity distribution to the probe beam profile in the dual thermal lens system are investigated experimentally and theoretically. A model, which accounts for heat conduction, natural heat convection and ray tracing in inhomogeneous medium is developed to predict the characteristics of the thermal lens system. Numerical results show the advantage of the uniform pump beam in reducing the spherical aberration compared with the Gaussian pump beam. An experiment with the uniform pump beam is carried out to confirm the numerical prediction. Experimental results show a good agreement with the calculated results. Finally, the pump power is varied to adjust the focal length of the system.