24 June 2015 Influence of low-contrast subwavelength grating shape on polarization characteristics of GaN-based light-emitting diode emissions
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Abstract
We analytically investigated the influence of grating shape on polarization characteristics of the emission from a GaN-based light-emitting diode with a low-contrast subwavelength grating (SWG), such as SiO2-SWG. The electromagnetic field distribution, calculated using the finite-difference time-domain method, predicted that the polarization characteristics strongly depend on the grating side slope. A trapezoid SiO2-SWG was fabricated on the GaN-based-LED using electron-beam lithography. The optical characteristics of the electroluminescence agreed with those theoretically predicted, and we succeeded in demonstrating the influence of grating shape on the polarization of LED emission.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yuusuke Takashima, Ryo Shimizu, Masanobu Haraguchi, Yoshiki Naoi, "Influence of low-contrast subwavelength grating shape on polarization characteristics of GaN-based light-emitting diode emissions," Optical Engineering 54(6), 067112 (24 June 2015). https://doi.org/10.1117/1.OE.54.6.067112 . Submission:
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