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Proceedings Paper

Designed achromatic quarter wave plates of subwavelength grating structure
Author(s): Jun Zhang; Shu-hua Yan; Chun-lei Zhou; Shao-wei Shen; E Li; Hui-peng Tong
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Paper Abstract

We presented the design of an achromatic quarter wave plates based on subwavelength grating structure and considered the dispersion of material in design. The refractive indices of most material become small with the light wavelength increasing, and the dispersion of effective refractive indices of TE and TM polarized waves in the subwavelength structure increase with the light wavelength. Using this feature, we can design a quarter wave plates whose phase retardation is maintained at π/2 for a larger wavelength range. A design method using the effective medium theory is described, and the transmittance of TE and TM polarized waves are evaluated by numerical calculation with the rigorous couple wave theory. The results showed that phase retardation of the quarter wave plates had maintained retardation errors at ±1° for a ±9.85% change in wavelength, and the transmittance of both TE and TM waves were more than 94%. We also designed an achromatic quarter wave plates applied to visible light wavelength range using the method whose phase retardation maintained at ±2° in the 0.47 μm ~ 0.63 μm wavelength interval, and there also had a transmittance of more than 94% for the TE and TM waves.

Paper Details

Date Published: 12 March 2008
PDF: 11 pages
Proc. SPIE 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing, 66240V (12 March 2008); doi: 10.1117/12.791095
Show Author Affiliations
Jun Zhang, National Univ. of Defense Technology (China)
Shu-hua Yan, National Univ. of Defense Technology (China)
Chun-lei Zhou, National Univ. of Defense Technology (China)
Shao-wei Shen, National Univ. of Defense Technology (China)
E Li, National Univ. of Defense Technology (China)
Hui-peng Tong, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 6624:
International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing

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