ArticleOptics express2018
Depth-resolved measurement of optical radiation-pressure forces with optical coherence tomography.
Article in Optics express, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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Who cites it
6 citing papers in PubMed.
- Recent advances in optical elastography and emerging opportunities in the basic sciences and translational medicine [Invited].Biomedical optics express · 2023Review
- Optofluidic Particle Manipulation: Optical Trapping in a Thin-Membrane Microchannel.Biosensors · 2022Article
- Light-sheet photonic force optical coherence elastography for high-throughput quantitative 3D micromechanical imaging.Nature communications · 2022Article
- Spectroscopic photonic force optical coherence elastography.Optics letters · 2019Article
- Microrheological quantification of viscoelastic properties with photonic force optical coherence elastography.Optics express · 2019Article
- Photonic force optical coherence elastography for three-dimensional mechanical microscopy.Nature communications · 2018Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A weakly focused laser beam can exert sufficient radiation pressure to manipulate microscopic particles over a large depth range. However, depth-resolved continuous measurement of radiation-pressure force profiles over an extended range about the focal plane has not been demonstrated despite decades of research on optical manipulation. Here, we present a method for continuous measurement of axial radiation-pressure forces from a weakly focused beam on polystyrene micro-beads suspended in viscous fluids over a depth range of 400 μm, based on real-time monitoring of particle dynamics using optical coherence tomography (OCT). Measurements of radiation-pressure forces as a function of beam power, wavelength, bead size, and refractive index are consistent with theoretical trends. However, our continuous measurements also reveal localized depth-dependent features in the radiation-pressure force profiles that deviate from theoretical predictions based on an aberration-free Gaussian beam. The combination of long-range radiation pressure and OCT offers a new mode of quantitative optical manipulation and detection with extended spatial coverage. This may find applications in the characterization of optical tractor beams, or volumetric optical manipulation and interrogation of beads in viscoelastic media.
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Registered trials
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