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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 5 — Mar. 1, 2010
  • pp: 5344–5349

Transmission type color filter incorporating a silver film based etalon

Yeo-Taek Yoon and Sang-Shin Lee  »View Author Affiliations

Optics Express, Vol. 18, Issue 5, pp. 5344-5349 (2010)

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Transmission type color filters based on a thin film Ag-SiO2-Ag etalon were built on a quartz substrate, enabling the infrared suppressed transmission and large effective area. They were designed by taking into account the influence of the dispersion characteristics and the thickness of the silver metal. Three different color filters were devised: The cavity length for the red, green and blue filter was 160 nm, 130 nm, and 100 nm respectively, while the metal layer was fixed at 25 nm. The observed spectral pass band was centered at 650 nm, 555 nm, and 480 nm for the red, green, and blue device; the corresponding bandwidth was about 120 nm, 100 nm, and 120 nm; and the peak transmission was all ~60%. For the oblique light incidence the angular dependence of the peak relative transmission was measured to be ~1%/degree. The spectral response of the device was also analyzed for two different polarizations as the tilt angle varied up to 12o, and it was found to be hardly polarization dependent. Finally, as for the positional dependence the relative transmission and the center wavelength were found to vary within 10% and 5 nm respectively over an effective area of 4x4 cm2.

© 2010 OSA

OCIS Codes
(160.3900) Materials : Metals
(310.0310) Thin films : Thin films
(330.1710) Vision, color, and visual optics : Color, measurement
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Thin Films

Original Manuscript: January 26, 2010
Revised Manuscript: February 25, 2010
Manuscript Accepted: February 25, 2010
Published: February 26, 2010

Yeo-Taek Yoon and Sang-Shin Lee, "Transmission type color filter incorporating a silver film based etalon," Opt. Express 18, 5344-5349 (2010)

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