Here are some photos of the reflection hologram set up using the diode laser supplied by Integraf (www.integraf.com). The front lens has been removed to provide a clean but very elliptical spot of light. The laser is mounted vertically (no mirrors are used), and it is high enough to provide a wide enough spot to cover the film plate. The laser is powered by two D cells (the clip leads are visible in the photo)
The bar type lens holder from the PHOTON2 kit holds the laser. (The leads to the laser look very fragile- they probably should be protected.) The lens holder post is mounted in a stand "borrowed" from the physics lab, using a right angle clamp. Note that the laser has a monitor LED which is red, however, it is above the lens holder and doesn't expose the plate.
The optical breadboard sits on a ridged rubber pad and three screws provide the support for the film plate. Better holograms were obtained when the object was close to the plate, so the length of the support screws is somewhat important. The shutter is a bit more of a problem in this configuration. I had two boxes (not shown) on either side of the support stand, with a piece of cardboard resting across. It's a bit harder to work under the shutter setting up the film plate, and care is needed in removing the shutter so the laser is not touched.
Exposure time (laser about 30 cm from plate): 10 seconds
Developer (JD4 from Integraf): 10-15 seconds, 20 second rinse, Bleach until clear, 20 second rinse.