Laser and Holography

I was trying to make a hologram from my photonics project. Apparently, not very successful. Can't really see the image ... still wondering why ... still trying to figure out and give another shot next week.

Laser is actually an acronym -
Light
Amplification by
Stimulated
Emission
Radiation

The picture below is a laser - yes , the black one. It doesn't look like the normal laser-pointer-type laser, it is ... hmm... more powerful ... Well size does matters.

The table with holes on it is an optical table. It is used to help alignment of the lenses and mirrors and beam splitters ...