Lasing action in gallium nitride quasicrystal nanorod arrays

Shih Pang Chang*, Kuok Pan Sou, Chieh Han Chen, Yuh Jen Cheng, Ji Kai Huang, Chung Hsiang Lin, Hao-Chung Kuo, Chun-Yen Chang, Wen Feng Hsieh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


We report the observation of lasing action from an optically pumped gallium nitride quasicrystal nanorod arrays. The nanorods were fabricated from a GaN substrate by patterned etching, followed by epitaxial regrowth. The nanorods were arranged in a 12-fold symmetric quasicrystal pattern. The regrowth grew hexagonal crystalline facets and core-shell multiple quantum wells (MQWs) on nanorods. Under optical pumping, multiple lasing peaks resembling random lasing were observed. The lasing was identified to be from the emission of MQWs on the nanorod sidewalls. The resonant spectrum and mode field of the 12-fold symmetric photonic quasicrystal nanorod arrays is discussed.

Original languageEnglish
Pages (from-to)12457-12462
Number of pages6
JournalOptics Express
Issue number11
StatePublished - 21 May 2012

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