Directional light output from photonic-wire microcavity semiconductor lasers

J. P. Zhang*, D. Y. Chu, S. L. Wu, W. G. Bi, R. C. Tiberio, C. W. Tu, S. T. Ho

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


We have obtained directional light output from a recently realized InGaAsP photonic-wire microcavity ring lasers. The output was achieved by fabricating a 0.45-μm-wide U-shape waveguide next to a 10-μm diameter microcavity ring laser. The laser has a threshold pump power of around 124 μW when optically pumped at 514 nm. It is comparable to the former structure without output coupling. The output coupling efficiency can be controlled carefully by choosing the spacing between the laser cavity and the waveguide.

Original languageEnglish (US)
Pages (from-to)968-970
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
StatePublished - Aug 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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