Open Access
Table 1
Comparison of the focus point FWHM and the error between Mie-theory based simulation [16] and FRISP-method for micro-spheres with a diameter of 5 μm, different refractive indices n and wavelength λ.
| Refractive index n | Focus point with calculation method | λ | [nm] | ||
|---|---|---|---|---|---|
| 300 | 400 | 500 | 600 | ||
| 1.46 | Mie-theory [nm] | 198 | 256 | 285 | 354 |
| FRISP [nm] | 198 | 254 | 290 | 351 | |
| Deviation [%] | 0.0 | 0.8 | 1.7 | 0.9 | |
| 1.59 | Mie-theory [nm] | 177 | 220 | 275 | 330 |
| FRISP [nm] | 176 | 222 | 271 | 319 | |
| Deviation [%] | 0.6 | 0.9 | 1.5 | 3.4 | |
| 1.93 | Mie-theory [nm] | 126 | 160 | 195 | 216 |
| FRISP [nm] | 128 | 162 | 197 | 223 | |
| Deviation [%] | 1.6 | 1.2 | 1.0 | 3.1 | |
| 2.20 | Mie-theory [nm] | 102 | 120 | 150 | 186 |
| FRISP [nm] | 103 | 125 | 157 | 187 | |
| Deviation [%] | 1.0 | 4.0 | 4.5 | 0.5 |
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