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Single Plane Illumination Module and Micro-capillary Approach for a Wide-field Microscope
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Dyadic Green's function for aplanatic solid immersion lens based sub-surface microscopy.

Li Hu1, Rui Chen, Krishna Agarwal

  • 1Department of Electrical and Computer Engineering, National University of Singapore, 117576 Singapore.

Optics Express
|October 15, 2011
PubMed
Summary
This summary is machine-generated.

We derived a general dyadic Green's function for solid immersion lens (SIL) microscopy. This electromagnetic wave model accurately describes SIL systems, improving resolution and depth of field analysis.

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Area of Science:

  • Optics and Photonics
  • Electromagnetism
  • Microscopy

Background:

  • Solid immersion lenses (SILs) enhance microscopy resolution.
  • Existing models often rely on paraxial approximations.
  • A generalized electromagnetic approach is needed for non-aplanatic conditions.

Purpose of the Study:

  • To derive the dyadic Green's function for aplanatic SIL microscopy.
  • To provide a general electromagnetic wave formulation applicable beyond paraxial assumptions.
  • To analyze key optical properties and performance metrics of SIL systems.

Main Methods:

  • Electromagnetic wave formulation.
  • Derivation of the dyadic Green's function.
  • Analysis of optical system properties without paraxial approximations.

Main Results:

  • A general dyadic Green's function for SIL microscopy is presented.
  • The formulation is valid at both aplanatic and non-aplanatic points.
  • Effects of numerical aperture on intensity, resolution, and depth of field are quantified.
  • Longitudinal optical effects are investigated.

Conclusions:

  • The derived dyadic Green's function offers a comprehensive electromagnetic description of SIL microscopy.
  • This model enables accurate prediction of performance metrics like resolution and depth of field.
  • The study provides insights into optimizing SIL-based imaging systems.