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A numerical approach for designing multi-wavelength plate

D. XUE1,2,* , R. PAN3, L. WANG1, H. DENG1, Y. LYU1, Q. XUE1, J. HAN1

Affiliation

  1. School of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, China
  2. Zaozhuang Engineering Research Center of Terahertz, Zaozhuang 277160, China
  3. China United Network Communications Group Co., Ltd, Zaozhuang 277100, China

Abstract

Wave plates made of birefringent materials can only be used at certain single wavelength, since the phase retardation produced is approximately inverse proportional to the wavelength. In this article, we introduced a geometric numerical method to design multi-wavelength wave plates with the plot of the curves of kd0(λ) (k=1, 2,…), where d0(λ) is the thickness of the zero-order λ/4 waveplate. The two common cases in designing are discussed and simulated with quartz crystal as application examples. In the first case, the thickness is specified. A quartz plate with thickness of 1 mm is designed, which operates as λ/4 waveplate at 866 nm, as λ/2 waveplate at 777 nm, and as λ waveplate at 606.8 nm. In the second case, the two wavelengths are specified. Two dual-wavelength quartz plates for 460 nm and 520 nm are designed. One is 282 μm thick, which operates as a λ/4 waveplate at 460 nm and a λ waveplate at 520 nm. The other one is 380 μm thick, which operates as λ/4 plate at both 460 nm and 520 nm..

Keywords

Polarized light, Quartz crystal, Multi-wavelength, Wave plate, Design.

Submitted at: Aug. 20, 2017
Accepted at: June 7, 2018

Citation

D. XUE, R. PAN, L. WANG, H. DENG, Y. LYU, Q. XUE, J. HAN, A numerical approach for designing multi-wavelength plate, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 5-6, pp. 253-257 (2018)