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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 15 — Aug. 1, 2010
  • pp: 2564–2566

Broadband infrared mirror using guided-mode resonance in a subwavelength germanium grating

Juha M. Kontio, Janne Simonen, Kari Leinonen, Markku Kuittinen, and Tapio Niemi  »View Author Affiliations

Optics Letters, Vol. 35, Issue 15, pp. 2564-2566 (2010)

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We demonstrate a broadband mirror for the IR wavelength region comprising a subwavelength grating made of germanium. We design and optimize the guided-mode resonances in the structure for TM-polarized incident light by rigorous electromagnetic simulations. The grating structure is realized by nanoimprint lithography and dry etching. The reflectivity of the mirror is over 95% for the wavelength range between 2245 and 3080 nm .

© 2010 Optical Society of America

OCIS Codes
(130.3060) Integrated optics : Infrared
(310.2790) Thin films : Guided waves
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Thin Films

Original Manuscript: May 19, 2010
Revised Manuscript: June 29, 2010
Manuscript Accepted: July 1, 2010
Published: July 22, 2010

Juha M. Kontio, Janne Simonen, Kari Leinonen, Markku Kuittinen, and Tapio Niemi, "Broadband infrared mirror using guided-mode resonance in a subwavelength germanium grating," Opt. Lett. 35, 2564-2566 (2010)

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