J4 ›› 2014, Vol. 31 ›› Issue (1): 25-32.

• Basic Optics • Previous Articles     Next Articles

Modulate Mixed Multi-wavelength Lights to Realize Focusing, Shaping and Spectrum Separation Function by Cascaded Diffractive Optical Elements

DING Li HUANG Kun KANG Xueliang LI Yongping   

  1. Department of Optics & Optical Engineering,University of Science and Technology of China ,Hefei 230026,China
  • Received:2013-05-29 Revised:2013-08-15 Published:2014-01-28 Online:2013-12-31

Abstract: Diffractive optical element (DOE) has unique dispersion characteristics and flexible design freedom. The cascaded DOE is applied in the concentrator system of solar cell to achieve focusing, shaping and spectrum separation function and presents the design methods and algorithms. Seven regular shaped and completely separated spots are observed on the target surface when simulating with the mixed seven-wavelength light. It is proved that the cascaded DOE structure can greatly enhance the efficiency of solar energy utilization.

Key words: Fourier optics, solar concentrator system, cascaded DOE, focusing, shaping, spectrum separation

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