Abstract
We numerically analyze the effects of radius and phase shift of phase objects on the diffraction image of the 4f coherent imaging system, a system used for measuring the third-order nonlinear refractive index. The selection of the aperture radius is discussed. We prove that when the phase object radius is 0.1 time of the aperture radius and the phase change of the phase object is 0.57π, one can get the highest sensitivity for nonlinear refraction measurement.
| Original language | English |
|---|---|
| Pages (from-to) | 686-690 |
| Number of pages | 5 |
| Journal | Optics Communications |
| Volume | 266 |
| Issue number | 2 |
| DOIs | |
| State | Published - 15 Oct 2006 |
Keywords
- 4f imaging system
- Phase objects
- Third-order nonlinear refractive index
- Top-hat beam
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