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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 15 — Aug. 1, 2010
  • pp: 2535–2537

Design of low-threshold compact Au-nanoparticle lasers

X. F. Li and S. F. Yu  »View Author Affiliations


Optics Letters, Vol. 35, Issue 15, pp. 2535-2537 (2010)
http://dx.doi.org/10.1364/OL.35.002535


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Abstract

We performed a rigorous study to reduce threshold gain of Au-nanoparticle lasers in the deep-subwavelength scale with the consideration of strong interband transitions in Au and device dimensions. We found that the high-threshold optical gain of the nanolaser (over 10 5 cm 1 , which is matched with the result estimated from a previous article [ Nature 460, 1110 (2009)]) arises from the high interband transition of Au near 530 nm . It can be shown that by increasing the background index, as well as optimizing the lasing wavelength and device dimensions, the threshold gain (cavity volume) can be reduced by 43% (90%).

© 2010 Optical Society of America

OCIS Codes
(140.3460) Lasers and laser optics : Lasers
(240.6680) Optics at surfaces : Surface plasmons
(290.5850) Scattering : Scattering, particles

ToC Category:
Optics at Surfaces

History
Original Manuscript: February 12, 2010
Manuscript Accepted: June 27, 2010
Published: July 21, 2010

Citation
X. F. Li and S. F. Yu, "Design of low-threshold compact Au-nanoparticle lasers," Opt. Lett. 35, 2535-2537 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-15-2535

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