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Title: Design of low-threshold compact Au-nanoparticle lasers
Authors: Li, XF
Yu, SF 
Keywords: Nanoparticles
Semiconductor quantum wells
Issue Date: 1-Aug-2010
Publisher: Optical Society of America
Source: Optics letters, 1 Aug. 2010, v. 35, no. 15, p. 2535-2537 How to cite?
Journal: Optics letters 
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[sup 5] cm[sup -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%).
ISSN: 0146-9592
EISSN: 1539-4794
DOI: 10.1364/OL.35.002535
Rights: © 2010 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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