Cladding effect on hybrid plasmonic nanowire cavity at telecommunication wavelengths

Pi Ju Cheng, Chen Ya Weng, Shu Wei Chang, Tzy Rong Lin, Chung-Hao Tien

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


In this paper, we investigate the effect of cladding layers on a hybrid plasmonic nanowire cavity. A decent confinement factor and moderate modal loss can be achieved for lasing. Within a certain index range of the cladding layer, the fundamental hybrid plasmonic mode is well confined inside the narrow gain region and becomes the most promising lasing mode. Our results also indicate that the mirror loss can be reduced if the refractive index of the cladding layer is properly chosen. An estimated cold-cavity quality factor of 87, corresponding to a threshold gain of about 1072 cm-1, is achievable at a cavity length of 10.13 μm for the lasing mode.

Original languageEnglish
Article number6373689
JournalIEEE Journal on Selected Topics in Quantum Electronics
Issue number3
StatePublished - 20 May 2013


  • Laser resonators
  • plasmonic optics
  • semiconductor lasers
  • waveguides

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