|標題:||Room temperature ultraviolet GaN metal-coated nanorod laser|
Shih, M. H.
Department of Electronics Engineering and Institute of Electronics
Department of Photonics
|摘要:||This study demonstrates a room-temperature ultraviolet GaN/Al nanorod (NR) metal laser with an optimized sidewall. A wet-chemical etching process with potassium hydroxide was used to control the GaN NR sidewall angle and polish the NR surface. The lasing action was observed near a wavelength of 365 nm with a low threshold power density of 5.2 mJ/cm(2). The high-quality factor (Q) surface plasmon lasing modes were characterized with experiments and three-dimensional finite-element method simulations. We also studied the optical modes in GaN metal-coated NR with and without an Al layer and verified the metal layer is necessary for high-Q resonant modes. (c) 2013 AIP Publishing LLC.|
|期刊:||APPLIED PHYSICS LETTERS|
|Appears in Collections:||Articles|
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