Observation of enhanced two-photon absorption in ZnS quantum dots at an ultraviolet wavelength

P. Kumbhakar; M. Chattopadhyay; R. Sarkar; U. Chatterjee

doi:10.3788/col201109.101902

Journals >Chinese Optics Letters >Volume 9 >Issue 10 >Page 101902 > Article

Chinese Optics Letters
Vol. 9, Issue 10, 101902 (2011)

Observation of enhanced two-photon absorption in ZnS quantum dots at an ultraviolet wavelength

P. Kumbhakar, M. Chattopadhyay, R. Sarkar, and U. Chatterjee

Author Affiliations

Nanoscience Laboratory, Department of Physics, National Institute of Technology, Durgapur, 713209, India

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DOI: 10.3788/col201109.101902 Cite this Article Set citation alerts

P. Kumbhakar, M. Chattopadhyay, R. Sarkar, U. Chatterjee. Observation of enhanced two-photon absorption in ZnS quantum dots at an ultraviolet wavelength[J]. Chinese Optics Letters, 2011, 9(10): 101902 Copy Citation Text

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Abstract

Two-photon absorption (2PA) in zinc sulphide (ZnS) and Mn2+-doped ZnS quantum dots is reported by the z-scan technique, with nanosecond pulsed laser radiation at 355 nm. The observed values of the 2PA cross section of all the samples are 105 times larger than that of bulk ZnS.

Keywords

160.4236 190.0190 190.4180

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