Optical sectioning by multiexcitonic ladder climbing in colloidal quantum dots

Nir R. Ben-Haim; Dan Oron

doi:10.1364/OL.33.002089

Optical sectioning by multiexcitonic ladder climbing in colloidal quantum dots

Nir R. Ben-Haim, Dan Oron

Weizmann Institute of Science, Israel

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Optical sectioning is performed by collecting the fluorescent emission of two-exciton states in colloidal quantum dots. The two-exciton state is created by two consecutive resonant absorption events, thus requiring unprecedented low excitation energy and peak powers as low as 10⁶ W/cm². The depth resolution is shown to be equivalent to that of standard multiphoton microscopy, and it was found to deteriorate only slowly as saturation of the two-exciton state is approached, owing to signal contribution from higher excitonic states.

Original language	English
Pages (from-to)	2089-2091
Number of pages	3
Journal	Optics Letters
Volume	33
Issue number	18
DOIs	https://doi.org/10.1364/OL.33.002089
Publication status	Published - Sep 15 2008

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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Optical sectioning by multiexcitonic ladder climbing in colloidal quantum dots

Abstract

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