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Biomed Opt Express. 2012 Oct 1;3(10):2579-86. doi: 10.1364/BOE.3.002579. Epub 2012 Sep 17.

Phase-sensitive OCT imaging of multiple nanoparticle species using spectrally multiplexed single pulse photothermal excitation.

Author information

  • 1Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA.

Abstract

We apply phase-sensitive optical coherence tomography to image multiple nanoparticle species with two excitation wavelengths matched to their distinct absorption peaks. Using different modulation frequencies, multiple species collocated within the sample can be distinguished. In addition, we characterize single-pulse excitation schemes as a method to minimize bulk heating of the sample. We demonstrate this new scheme with B-mode photothermal measurements of tissue phantoms.

KEYWORDS:

(110.3000) Image quality assessment; (160.4236) Nanomaterials; (170.4500) Optical coherence tomography

PMID:
23082297
[PubMed]
PMCID:
PMC3470000
Free PMC Article

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