Efficient waveguide-coupling of metal-clad nanolaser cavities

Myung-Ki Kim, Amit M. Lakhani, Ming C. Wu

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Many remarkable semiconductor-based nanolaser cavities using metal have been reported in past few years. However, the efficient coupling of these small cavities to waveguides still remains a large challenge. Here, we show highly efficient coupling of a semiconductor-based metal-clad nanolaser cavity operating in the fundamental dielectric cavity mode to a silicon-on-insulator waveguide. By engineering the effective refractive index and the field distribution of the cavity mode, a coupling efficiency as high as 78% can be achieved for a metal-clad nanolaser with a modal volume of 0.28 (λ/n)3 while maintaining a high optical quality factor of < 600.

Original languageEnglish
Pages (from-to)23504-23512
Number of pages9
JournalOptics Express
Volume19
Issue number23
DOIs
Publication statusPublished - 2011 Nov 7
Externally publishedYes

Fingerprint

waveguides
cavities
metals
Q factors
insulators
engineering
refractivity
silicon

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Efficient waveguide-coupling of metal-clad nanolaser cavities. / Kim, Myung-Ki; Lakhani, Amit M.; Wu, Ming C.

In: Optics Express, Vol. 19, No. 23, 07.11.2011, p. 23504-23512.

Research output: Contribution to journalArticle

Kim, Myung-Ki ; Lakhani, Amit M. ; Wu, Ming C. / Efficient waveguide-coupling of metal-clad nanolaser cavities. In: Optics Express. 2011 ; Vol. 19, No. 23. pp. 23504-23512.
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