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Depth response of confocal optical microscopes.

T R Corle, C H Chou, G S Kino

|September 10, 2009

Summary

Confocal scanning optical microscopy

Area of Science:

Optical microscopy
Confocal microscopy
Scanning microscopy

Background:

Confocal scanning optical microscopy (CSOM) is a powerful technique for high-resolution imaging.
Accurate theoretical modeling is crucial for interpreting CSOM data.
Lens aberrations can significantly impact microscope performance.

Purpose of the Study:

To experimentally measure the on-axis intensity response of a CSOM.
To compare experimental data with theoretical predictions.
To investigate the effect of aberrations on the microscope's performance.

Main Methods:

Utilized a confocal scanning optical microscope.
Employed an objective lens with a numerical aperture of 0.9.
Performed numerical integration of standard diffraction theory, incorporating lens aberrations.

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Main Results:

Experimental on-axis intensity response measurements were obtained.
Data showed favorable agreement with theoretical calculations when lens aberrations were included.
The shape of the central intensity lobe remained invariant to surface roughness and tilt.

Conclusions:

Theoretical models accurately predict CSOM performance when aberrations are considered.
Lens aberrations are a critical factor in the on-axis intensity response.
The central lobe's shape is robust against surface imperfections, enhancing imaging reliability.