Optical limiting properties of CdS nanowires

Intensity-dependent nonlinear optical transmission studies of cadmium sulfide (CdS) nanowires (∼ 50–100 nm diameter) suspended in dimethylformamide have been carried out in the visible region using the Z-scan technique with 7 ns pulses from the second harmonic of an Nd:YAG laser. The optical limitin...

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Published inOptics communications Vol. 283; no. 20; pp. 4104 - 4107
Main Authors Muthukumar, V. Sai, Reppert, J., Sandeep, C.S. Suchand, Krishnan, S. Siva Rama, Podila, R., Kuthirummal, N., Sai, S. Siva Sankara, Venkataramaniah, K., Philip, R., Rao, A.M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.10.2010
Subjects
Cadmium sulfides
CdS nanowires
Compact disks
Constraining
Lasers
Nanowires
Nonlinear optics
Nonlinearity
Optical limiting
Optical properties
Pulsed laser vaporization
Sulfides
Transmittance
Z-scan
Pulsed laser vaporization
Optical limiting
Z-scan
Nonlinear optics
CdS nanowires
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Summary:Intensity-dependent nonlinear optical transmission studies of cadmium sulfide (CdS) nanowires (∼ 50–100 nm diameter) suspended in dimethylformamide have been carried out in the visible region using the Z-scan technique with 7 ns pulses from the second harmonic of an Nd:YAG laser. The optical limiting threshold of CdS nanowires suspension was determined to be 1.3 J cm − 2 , with normalized transmittance of 0.47, which is relatively lower when compared with those of many popular metal nanowire suspensions reported in the literature. Based on an effective three-photon absorption model, nonlinear absorption and nonlinear scattering were identified as the dominant processes for the measured reduced transmittance.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2010.06.020