You may have to move DL1 left or right and/or up or down to uniformly cover H1. Later, in Figure 21d, I'll show you the setup if you want to hang your hologram on a wall and use underneath table based lighting. Because the fringes are more narrowly spaced, they filter out all but one wavelength of the white light, giving you a monochromatic image. The wooden clothespin offers another advantage. One on each side and one on the top. no movement, no vibrations, no noise, no air currents, etc.You will need the diode laser discussed below, a supply of Though slightly trickier and thus not recommended for first-time holographers, one can also use PFG-01 holographic film sheets sandwiched and clipped between two glass plates instead of using holographic plates. As long as there is no relative movement between the object and the plate, no separate vibration isolation is needed.The choice and preparation of the object is crucial: (1) it should be made of a solid material such as a quarter or dime (no furry or fabrics); (2) it must appear bright when illuminated with the red laser light; and (3) it must not move or deform.If it's your first time making a hologram, try to avoid choosing objects that are fabric or fury (e.g. However, the room should be sufficiently dark so that one cannot read in it. The laser light for replaying the images comes from the back of the hologram and the resulting image wavefront is transmitted through the film to be viewed from the front.

Transmission Hologram Setup. So, finally the image, formed by this process consist … Before diving into the details, here's a super duper quick overview on how a hologram is made. At the same time, the beam passing through the plate serves as the reference beam.The elimination of vibrations and component movement during the exposure is even more critical during a reflection hologram recording.

This is a white-light hologram and can be viewed with sunlight (best), a clear light bulb with a vertical filament, or a flashlight. For best results, spray paint the emulsion (sticky) side with a diffuse black paint. To increase the brightness of the image, place the plate, emulsion up, on a piece of paper towel that is on a large area of newspaper outdoors and spray the plate with 2 to 3 thin coats of quick-drying flat black enamel paint. Check the density of your first recording and make exposure time corrections if needed. The laser beam is spread by a spherical lens of about 3 mm diameter, shown as the red glow at the left of the photo. The image will be less bright under these conditions. At a 56 degree reconstructing angle, its color will be golden or reddish since you're using a red laser. We'll tweak this later.The second change is to insert H1 in its plate holder and orientate the transmission hologram H1 so its projecting its real image. Testing the setup by using a Michelson interferometer may be one way of knowing if it is stable; if fringes are visible, then holograms are definitely possible. Figure 19a illustrates the optical arrangement for a single beam reflection hologram. Later, in Figure 21d, I'll show you the setup if you want to hang your hologram on a wall and use underneath table based lighting. Remember, though, that you can only move H2 so close to H1 without the reconstructing light for H1 hitting H2, which you don't want.If you want your final white light reflection display hologram to be illuminated from underneath the plate with the illuminating light source on a table top, use the setup shown in Figure 21d.A reflection hologram produces a monochromatic colored image. Place that side toward the object (i.e.

Figure 21a illustrates the setup if you want to hang your hologram on a wall and use overhead ceiling lighting.