Discussion Overview
The discussion revolves around determining the resolution of optical systems that are not diffraction limited. Participants explore various methods and considerations for assessing resolution in conventional optics setups, including the use of spot diagrams and comparisons with ideal systems.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- Some participants inquire about methods to determine resolution in non-diffraction limited systems, specifically referencing the Rayleigh criterion.
- Spot diagrams are suggested as a potential tool for evaluating resolution, with a focus on comparing blur diameters between actual and ideal systems.
- Near-field imaging systems, such as NSOM, are mentioned as examples where resolution is defined by the size of the fiber tip rather than diffraction limits.
- Participants express uncertainty about the resolution limits of techniques like stimulated emission depletion and other super-resolution methods.
- One participant emphasizes the complexity of determining resolution in systems with imperfections, noting factors such as spot size, intensity distribution, and symmetry.
- There is a discussion about the ambiguity of the term 'resolution' and the various characteristics that can be computed, including spot size and modulation transfer function.
- It is suggested that direct measurement of system performance may be more reliable than theoretical modeling.
Areas of Agreement / Disagreement
Participants express differing views on the methods for determining resolution in non-diffraction limited systems, and there is no consensus on a definitive approach or resolution limit.
Contextual Notes
Participants note that the definition of resolution can vary and that calculations may be complicated by factors such as aberrations, noise, and system characteristics.