Young's Double Slit Experiment examples
The example demonstrates classical Young's interference experiment first performed by Young in 1801.
The optical scheme consists of the following elements:
- a 0.4 by 10 mm rectangular aperture located at 0.5 m from a Gaussian beam source (green laser, 535 nm);
- a watch point showing the intensity of the beam just after propagation through the aperture;
- a watch point showing the intensity in the near field at 0.05 m from the aperture (Fresnel number F=6.0);
- a watch point showing the intensity in the far field at 0.5 m from the aperture (Fresnel number F=0.6);
- a 0.4 by 10 mm rectangular obstacle located at 1 m from the source and at 0.5 m from the aperture;
- a watch point showing the intensity in the near field at 0.05 m from the obstacle (Fresnel number F=6.0);
- a watch point showing the intensity in the far field at 1 m from the obstacle (Fresnel number F=0.3) where you can observe Young's fringes.
Another example replicates the optical scheme of the above example, but a focusing lens is added.
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