Influence of natural convection on beam propagation in fluidic optical device
Influence of natural convection on beam propagation in fluidic optical device
复制标题
流体光学器件中自然对流对光束传播的影响
DOI：
10.1016/j.ijheatmasstransfer.2015.06.085
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发表时间：
2015
影响因子：
5.2
通讯作者：
and Kazuyoshi Fushinobu
中科院分区：
文献类型：
--
作者：
Byunggi Kim;Hong Duc Doan;and Kazuyoshi Fushinobu
利用热透镜效应的流体光学器件作为一种灵活的光束整形器越来越受到人们的关注。然而，自然对流的开始抑制了流体光学装置的操作，因为它导致成形光束轮廓上的不对称失真。为了实现流体射束成形器，应该在射束轮廓变化方面控制这种不利影响。从这个角度出发，我们研究了自然对流对通过流体光学器件的传输光束轮廓的影响，通过连续激光诱导的热透镜效应。利用光束传输法的数值方法计算了探测光束的调制。计算结果与实验结果吻合较好。利用该数值模型，对双光束热透镜系统中控制环形光束非对称性和光束质量的参数进行了定量研究。本研究的核心是简单的五对角方程的解可以为自然对流流体光学器件中光束轮廓的调制提供关键的研究。
The fluidic optical device by means of the thermal lens effect has attracted increasing attention as a flexible beam shaper. However, onset of natural convection inhibits operation of the fluidic optical device as it causes asymmetric distortion on shaped beam profile. For implementation of the fluidic beam shaper, this adverse effect should be controlled in terms of the beam profile change. From this perspective, we investigated the influence of natural convection on the propagating beam profile through the fluidic optical device by means of CW laser induced the thermal lens effect. Numerical method taking advantage of beam propagation method was used to calculate modulation of the probe beam profile. The calculated results demonstrated good agreements with several experimental results. Using this numerical model, the parametric study to control asymmetry and quality of the annular beam was performed quantitatively in the dual beam thermal lens system. The core of this study is that the solution of the simple pentadiagonal equation can provide the crucial investigation on the modulation of the beam profile in the fluidic optical device with natural convection.