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I. Holography

II. Hologram Development Procedures

III. Film Data Sheet

IV. Hologram Ray Diagram

V. Optics Tutorial

Film Data Sheet The VRP-M and PFG-01 Materials

Characteristic curves for these emulsions, showing spectral sensitivity versus wavelength, are shown in figure 1. The VRP-M light sensitivity (CW radiation) is seen to peak at approximately 75 microJoules/cm² and that of PFG-01 (CW radiation) at approximately 100 microJoules/cm². Figure 2 shows the optical density after exposure by CW radiation and development versus energy.

Figure 1: Spectral sensitivity curves For VRP-M (black) and PFG-01 (grey)

Figure 2: Characteristic curves for VRP-M (left) and PFG-01.

Grain size characteristics for the VRP-M and PFG-01 emulsions are presented in Figure 3. The diffraction efficiency versus exposure for reflection holograms recorded on PFG-01 (using a CW laser) and on VRP-M (using a pulsed laser) is presented in figure 4. The maximum diffraction efficiency is seen to be >40% for both emulsions. Material life is more than two years.

Figure 3: Grain size distribution Curve for VRP-M and PF-01

Figure 4: Diffraction efficiency curves for VRP-M and PFG-01

The VRP-M emulsion may be used equally well with frequency-double pulsed Neodymium lasers as with green CW radiation. The PFG-01 emulsion, however, is not sensitive to pulsed radiation from the Ruby laser and as such should be only used with CW sources. Emulsions used with pulsed radiation should be post-sensitized with the technique of latensification (see section below).

Description of PFG-01 (This is the film we use)

Fine-grained red sensitive holographic plates and film designed for transmission or reflection hologram recording. Average grain size is 40nm, resolving power more than 3000 lines/mm, spectral sensitivity range 600-680nm (including 633nm, 647nm).

Summary of Technical Specifications