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Title: Nonlinear optical scattering and absorption in bismuth nanorod suspensions
Authors: Sivaramakrishnan, S.
Muthukumar, V.S.
Siva Sankara Sai, S.
Venkataramaniah, K.
Reppert, Jason
Rao, Apparao M.
Anija, M.
Philip, Reji
Kuthirummal, Narayanan
Issue Date: Aug-2007
Publisher: American Institute of Physics
Citation: Applied Physics Letters, 2007, Vol.91, 093104
Abstract: The authors present the results of optical limiting measurements of ~10 nm wide bismuth nanorods suspended in chloroform. Their Z-scan measurements reveal that optical limiting under 532 nm excitation stems from a strong nonlinear scattering (NLS) subsequent to nonlinear absorption (NLA) by suspension. On the other hand, the optical limiting is entirely due to NLA when excited with 1064 nm excitation in the nanosecond regime. The occurrence of NLS at one wavelength and absence at another is unusual, especially when compared to the behavior of carbon nanotubes under similar conditions, in which NLS is dominant at both wavelengths.
Description: Open Access. Also in ``Virtual Journal of Nanoscale Science and Technology", Vol.16(11), 10th September 2007
ISSN: E-ISSN: 1077-3118
P-ISSN: 0003-6951
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Copyright: 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Appears in Collections:Research Papers (LAMP)

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