High resolution, high collection efficiency in numerical aperture increasing lens microscopy of individual quantum dots

Zhiheng Liu, Bennett B. Goldberg, Stephen B. Ippolito, Anthony N. Vamivakas, M. Selim Ünlü, Richard Mirin

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

We demonstrate the application of a subsurface solid immersion technique to the photoluminescence spectroscopy of individual quantum dots. Contrasted with the conventional solid immersion microscopy, we used a numerical aperture increasing lens and moved the interface between the sample and the solid immersion lens away from the focal plane, thus diminished the influence of interface artifacts on the images obtained in a two-dimensional scan. Meanwhile, our technique has achieved a high spatial resolution of λ3 that is capable of resolving the spectroscopic features of single QDs. We also demonstrate that the collection efficiency of our system is six times better than that of a conventional confocal microscope with a high NA objective.

Original languageEnglish (US)
Article number071905
JournalApplied Physics Letters
Volume87
Issue number7
DOIs
StatePublished - Aug 15 2005

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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