Holography

Transparency Film

alternating clear and opaque concentric circular zones- creates a zone plate

How many images of the object will be present with holography?

2 real and virtual

What can be used to create a hologram?

A laser Interference Diffraction

Holography

a 3D image captured in a 2D plane

Coherent Parallel Light

essential for creating a real and virtual image of the original object

What is the zone plate interference pattern made by?

interference between direct laser light and laser light diffracted from the object spot

What happens to the wavefront from the object

it is exactly duplicated

reference beam

part of laser light that hits the photographic film directly

Illuminating beam

part of laser light that scatters off the object

Which image is considered the holographic image?

the virtual image the real image is typically ignored

What happens when a hologram is cute in half

the whole scene can still be seen (dimmer?)

Reflection Hologram

transmission hologram with a reflective coating wavefront returns to the same side that the reference beam comes from