Applied Physics B

, 124:35 | Cite as

Theoretical modeling on the laser-induced phase deformation of liquid crystal optical phased shifter

  • Zhuangqi Zhou
  • Xiangru Wang
  • Rusheng Zhuo
  • Xiaoxian He
  • Liang Wu
  • Xiaolin Wang
  • Qinggui Tan
  • Qi Qiu


To improve the working condition of liquid crystal phase shifter on incident laser power, a theoretical model on laser induced phase distortion is built on the physics of heat deposition and heat transfer. Four typical factors (absorption, heat sink structure, cooling fluid rate, and substrate) are analyzed to evaluate the influence of phase distortion when a relative high-power laser is pumped into the liquid crystal phase shifter. Flow rate of cooling fluid and heat sink structure are the most important two factors on improving the limit of incident laser power. Meanwhile, silicon wafer is suggested to replace the back glass contacting the heat sink, because of its higher heat transfer coefficient. If the device is fabricated on the conditions that: the total absorption is 5% and it has a strong heat sink structure with a flow rate of 0.01 m/s, when the incident laser power is 110W, the laser-induced phase deformation on the center is diminished to be less than 0.06, and the maximum temperature increase on the center is less than 1K degree.



This work was supported by the National Science Foundation of China (NSFC) (nos. 61405029, 91438108, 61775026).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Optoelectronic InformationUniversity of Electronic Science and Technology of ChinaChengduChina
  2. 2.School of Physical ElectronicsUniversity of Electronic Science and Technology of ChinaChengduChina
  3. 3.College of Optoelectronic Science and EngineeringNational University of Defense TechnologyChangshaChina
  4. 4.National Key Laboratory of Science and Technology on Space MicrowaveXi’anChina

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