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Applied Physics Letters / Volume 100 / Issue 4 / PHOTONICS AND OPTOELECTRONICS

Appl. Phys. Lett. 100, 041101 (2012); http://dx.doi.org/10.1063/1.3675885 (4 pages)

Random lasing mode alterations by single-nanoparticle perturbations

Seung Ho Choi and Young L. Kim

Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA

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(Received 26 August 2011; accepted 9 November 2011; published online 23 January 2012)

We numerically demonstrate that alterations in random lasing modes can serve as a highly sensitive biosensing mechanism for single-nanoparticle quantitation. In our approach, subtle perturbations from a single nanoparticle can induce dramatic changes in multiple eigenmodes in disordered structures that can be detected by spectral variations of lasing emission peaks. Several resonance mode frequencies show relatively linear spectral responses to nanoscale perturbations, and each mode possess different levels of perturbation sensitivity. We also show that such behavior exists in both highly and loosely packed disordered media. We envision that the simplicity of such realization will facilitate the biosensor development using random lasers.

© 2012 American Institute of Physics

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KEYWORDS, PACS, and IPC

Keywords

laser modes, laser theory, nanoparticles, nanophotonics

PACS

International Patent Classification (IPC)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3675885

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    C. Vanneste, P. Sebbah, and H. Cao, Phys. Rev. Lett. 98, 143902 (2007).

    A. Yamilov and H. Cao, Phys. Rev. A 69(3), 031803(R) (2004).

    V. Milner and A. Z. Genack, Phys. Rev. Lett. 94(7), 07390 (2005).


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