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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 8 — Apr. 9, 2012
  • pp: 8667–8674

Low-threshold supercontinuum generation in semiconductor nanoribbons by continuous-wave pumping

Fuxing Gu, Huakang Yu, Wei Fang, and Limin Tong  »View Author Affiliations

Optics Express, Vol. 20, Issue 8, pp. 8667-8674 (2012)

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We report the first observation of supercontinuum (SC) generation in single semiconductor nanoribbons (NRs). By launching a continuous wave (CW) 532-nm pump light along a 200-μm-length CdS NR for waveguiding excitation, SC generation is realized with a threshold down to sub-milliwatt level, which is ~3 orders lower compared with previous CW-pumped SC generated in glass fibers. The low threshold is benefitted from the favorable material properties and waveguide geometries including high Raman gains, strong light confinement, more optical guided modes and phonon modes. Our work paves the way to low-threshold nanoscale SC sources and may find widespread applications ranging from spectroscopic analysis and biological imaging to material research.

© 2012 OSA

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(290.5910) Scattering : Scattering, stimulated Raman
(300.2570) Spectroscopy : Four-wave mixing
(050.6624) Diffraction and gratings : Subwavelength structures
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

Original Manuscript: January 17, 2012
Revised Manuscript: March 22, 2012
Manuscript Accepted: March 25, 2012
Published: March 29, 2012

Virtual Issues
Vol. 7, Iss. 6 Virtual Journal for Biomedical Optics

Fuxing Gu, Huakang Yu, Wei Fang, and Limin Tong, "Low-threshold supercontinuum generation in semiconductor nanoribbons by continuous-wave pumping," Opt. Express 20, 8667-8674 (2012)

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