Talbot Imaging

Talbot imaging refers to the property of a beam forming an image of itself as it propagates. The image reveals itself in both phase and amplitude modulations as the beam propagates. The sample file "Talbot Imaging" shows a user defined aperture on surface 1 that consists of 20 rectangular slits, like a grating. A propagation of 20 mm reveals the phase reversed Talbot image of the grating. An additional 20.0 mm shows the restored image of the grating. The image is not perfect because of the finite extent of the grating. Note the region near the center of the grating has a well formed image.

Next:

• Fresnel Lens