Table 1 Radial and axial Point Spread Functions of the system can be directly estimated, in single- and two-photon excitation regimes, measuring the Full Width at Half Maximum (FWHM) of the radial and axial profiles shown in Fig. 2.
Excitation regime | Wavelength nm | Objective | Radial (FWHM) μm | Axial (FWHM) μm |
---|---|---|---|---|
Single Photon excitation (1PE) | 405 | 10X, 0.3 NA | 1.78 ± 0.05 | 2.6 ± 0.1 |
Two Photon excitation (2PE) | 740 | 10X, 0.3 NA | 1.82 ± 0.04 | 2.5 ± 0.1 |