Ann Mary, K.A. ; Unnikrishnan, N.V. ; Philip, Reji (2015) Defects related emission and nanosecond optical power limiting in CuS quantum dots Physica E: Low-dimensional Systems and Nanostructures, 74 . pp. 151-155. ISSN 1386-9477
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Official URL: http://doi.org/10.1016/j.physe.2015.06.031
Related URL: http://dx.doi.org/10.1016/j.physe.2015.06.031
Abstract
We report optical and nonlinear optical properties of CuS quantum dots and nanoparticles prepared through a nontoxic, green, one-pot synthesis method. The presence of surface states and defects in the quantum dots are evident from the luminescent behavior and enhanced nonlinear optical properties measured using the open aperture Z-scan, employing 5 ns laser pulses at 532 nm. The quantum dots exhibit large effective third order nonlinear optical coefficients with a relatively lower optical limiting threshold of 2.3 J cm−2, and the optical nonlinearity arises largely from absorption saturation and excited state absorption. Results suggest that these materials are potential candidates for designing efficient optical l
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
ID Code: | 121082 |
Deposited On: | 09 Jul 2021 06:06 |
Last Modified: | 09 Jul 2021 06:06 |
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