Book contents
- Frontmatter
- Contents
- Preface to the first edition
- Preface to the second edition
- 1 Introduction
- 2 Theoretical foundations
- 3 Propagation and focusing of optical fields
- 4 Resolution and localization
- 5 Nanoscale optical microscopy
- 6 Localization of light with near-field probes
- 7 Probe–sample distance control
- 8 Optical interactions
- 9 Quantum emitters
- 10 Dipole emission near planar interfaces
- 11 Photonic crystals, resonators, and cavity optomechanics
- 12 Surface plasmons
- 13 Optical antennas
- 14 Optical forces
- 15 Fluctuation-induced interactions
- 16 Theoretical methods in nano-optics
- Appendix A Semi-analytical derivation of the atomic polarizability
- Appendix B Spontaneous emission in the weak-coupling regime
- Appendix C Fields of a dipole near a layered substrate
- Appendix D Far-field Green functions
- Index
- References
5 - Nanoscale optical microscopy
Published online by Cambridge University Press: 05 November 2012
- Frontmatter
- Contents
- Preface to the first edition
- Preface to the second edition
- 1 Introduction
- 2 Theoretical foundations
- 3 Propagation and focusing of optical fields
- 4 Resolution and localization
- 5 Nanoscale optical microscopy
- 6 Localization of light with near-field probes
- 7 Probe–sample distance control
- 8 Optical interactions
- 9 Quantum emitters
- 10 Dipole emission near planar interfaces
- 11 Photonic crystals, resonators, and cavity optomechanics
- 12 Surface plasmons
- 13 Optical antennas
- 14 Optical forces
- 15 Fluctuation-induced interactions
- 16 Theoretical methods in nano-optics
- Appendix A Semi-analytical derivation of the atomic polarizability
- Appendix B Spontaneous emission in the weak-coupling regime
- Appendix C Fields of a dipole near a layered substrate
- Appendix D Far-field Green functions
- Index
- References
Summary
Optical measurement techniques, and near-field optical microscopy in particular, exist in a broad variety of configurations. In the following we will derive an interaction series to understand and categorize different experimental configurations. The interaction series describes multiple scattering events between an optical probe and a sample and is similar to the Born series in light scattering. We will start out by discussing far-field microscopy first and then proceed with selected configurations encountered in near-field optical microscopy.
The interaction series
The interaction of light with matter can be discussed in terms of light scattering events [1, 2]. Figure 5.1 is a sketch of a generic geometry considered in the following. The sample and – in the case of near-field optical microscopy – also an optical probe, which is positioned in close proximity, are assumed to be described by dielectric susceptibilities η(r) and χ(r), respectively. An incident light field Ei is illuminating the probe-sample region. Ei is assumed to be a solution of the homogeneous Helmholtz equation (2.35). The incoming field causes a scattered wave Es, which is detectable in the far-field. The total field is then given by E = Ei + Es. In a qualitative picture, there are several processes that can convert an incoming photon into a scattered photon. For example, the incoming photon may be scattered only at the probe or only at the sample before traveling into the far-field.
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- Principles of Nano-Optics , pp. 131 - 164Publisher: Cambridge University PressPrint publication year: 2012