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Optics Letters

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  • Vol. 23, Iss. 22 — Nov. 15, 1998
  • pp: 1742–1744

Energy transfer coupling of two-photon absorption and reverse saturable absorption for enhanced optical power limiting

Mukesh P. Joshi, J. Swiatkiewicz, Faming Xu, Paras N. Prasad, B. A. Reinhardt, and Ram Kannan  »View Author Affiliations


Optics Letters, Vol. 23, Issue 22, pp. 1742-1744 (1998)
http://dx.doi.org/10.1364/OL.23.001742


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Abstract

We introduce a new approach to enhancing the optical power-limiting function at near-IR wavelength (~800 nm) by coupling effective two-photon absorption in one molecule with excited-state absorption in another molecule. We experimentally demonstrate this approach by using a strong two-photon absorbing dye, AF-380, and a strong reverse saturable absorber, C60 . A nanosecond time-resolved experiment is used to show that energy transfer from AF-380 to C60 generates triplet excitation in C60 that further absorbs the pump beam to enhance the power-limiting function.

© 1998 Optical Society of America

OCIS Codes
(260.2160) Physical optics : Energy transfer
(270.5290) Quantum optics : Photon statistics
(300.1030) Spectroscopy : Absorption

Citation
Mukesh P. Joshi, J. Swiatkiewicz, Faming Xu, Paras N. Prasad, B. A. Reinhardt, and Ram Kannan, "Energy transfer coupling of two-photon absorption and reverse saturable absorption for enhanced optical power limiting," Opt. Lett. 23, 1742-1744 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-22-1742


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