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Abstract
This letter presents the fabrication and characterization of freestanding circular GaN gratings on a GaN-on-silicon platform. Optical modes propagate within the freestanding GaN membrane and their number decreases as the thickness of GaN membrane is reduced. Backside thinning of freestanding GaN membranes is used to obtain thinner GaN membranes that are helpful to reduce resonance modes and to broaden the reflectance interference fringes in the visible range. Strong coupling between the incident light and the circular grating is confirmed by angular-resolved reflectance measurement. The influences of the grating parameters on the reflectance spectra are investigated. This letter opens the way to fabricate single-layer GaN resonant gratings in the visible wavelength range.
Original language | English |
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Pages (from-to) | 915-918 |
Number of pages | 4 |
Journal | IEEE Photonics Technology Letters |
Volume | 26 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1 May 2014 |
Research Groups and Themes
- Photonics and Quantum
Keywords
- Circular GaN membrane grating
- backside thinning
- angular resolved microreflectance
- LIGHT-EMITTING-DIODES
- QUALITY-FACTOR
- WAVE-GUIDES
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Dive into the research topics of 'Circular GaN Membrane Gratings'. Together they form a unique fingerprint.Projects
- 1 Finished
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INTEGRATED LASER INDUCED FLUORESCENCE SYSTEM USING PHOTONIC CRYSTAL CAVITIES
Cryan, M. J. (Principal Investigator)
1/04/09 → 1/04/12
Project: Research