INTEGRAF--Simple Holography

Simple Holography

The Easiest Way to Make Holograms

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6. CONCLUSION

We have presented the simplest and least expensive method of making holograms. This type of project can be taught as art, craft, or science and technology in the elementary schools, before students have decided on their future occupation. Once interested, students will be induced to learn all the fundamental principles of optics and photonics: reflection, refraction, interference, diffraction, polarization, coherence, and scattering.

7. ADDITIONAL INFORMATION

USE OF THE WHITE CARDBOARD:

The white cardboard placed behind the object is for observing the silhouette to ensure that the object is illuminated as evenly as possible. Assuming that this cardboard is opaque, you can use it as the “shutter” by moving it to a position between the laser and the object (see step 4 in Section 4.3).

LASER PREPARATION:

Make sure the laser has been warmed up for at least 5 minutes before any holograms are exposed. Minimize any disturbance to the laser (do not touch it or even allow moving air to cross it) which may cause the outputs to become unstable.

HOW TO OBSERVE THE IMAGE IN THE FINISHED HOLOGRAMS:

To view your hologram, you need to make sure you're using the correct light source from the appropriate angle. See our article "How to View Your First Hologram" for details.

SETTING UP A SIMPLE LAB IN A CLASSROOM

When setting up your lab in a classroom for multiple students, you may want into account some of the practical considerations such as how you set up your "assembly line" for students to expose and develop their holograms. See our article "Teaching Holography in Classrooms" for details.

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