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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 25 — Dec. 7, 2009
  • pp: 22535–22542

Polarization-dependent GaN surface grating reflector for short wavelength applications

Joonhee Lee, Sungmo Ahn, Hojun Chang, Jaehoon Kim, Yeonsang Park, and Heonsu Jeon  »View Author Affiliations

Optics Express, Vol. 17, Issue 25, pp. 22535-22542 (2009)

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This study proposes a one-dimensional sub-wavelength grating structure on GaN surface which behaves as a reflector for transverse-electric polarized light in the blue wavelength range. The rigorous coupled-wave analysis method was used to analyze the effects of various structural parameters on the reflectance spectra of the grating. Based on the optimal design, a GaN surface grating reflector (SGR) was fabricated using holographic lithography and dry etching processes. It showed reflectance that exceeded 90% over a 60-nm bandwidth. The obtained experimental results were in good agreement with simulated ones. The SGR has an advantage of structural simplicity, which should greatly facilitate the fabrication and integration of high reflectors on GaN-based short-wavelength photonic devices.

© 2009 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(090.1970) Holography : Diffractive optics
(160.6000) Materials : Semiconductor materials
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:
Diffraction and Gratings

Original Manuscript: September 21, 2009
Revised Manuscript: November 12, 2009
Manuscript Accepted: November 16, 2009
Published: November 24, 2009

Joonhee Lee, Sungmo Ahn, Hojun Chang, Jaehoon Kim, Yeonsang Park, and Heonsu Jeon, "Polarization-dependent GaN surface grating reflector for short wavelength applications," Opt. Express 17, 22535-22542 (2009)

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