PFG-04 Dichromated Gelatin Holographic Plates

  • PFG-04 dichromated gelatin holographic plates

The PFG-04 is a dichromated gelatin holographic emulsion designed for making phase reflection hologram recordings with a blue or green laser. A grainless emulsion, it has high resolving power and a diffraction efficiency that can be greater than 75%.

  • Grainless emulsion
  • Dichromated gelatin
  • For blue or green laser

Available in plate formats listed below.

PFG-04 Dichromated Gelatin Holographic Plates

Item# Size & Pieces Price Add to Cart
S4P-06330 2.5"x2.5" (63x63mm), 30 plates $125
S4P-10225 4"x5" (102x127mm), 25 plates $260
Item# & Size Add to Cart

S4P-06330

2.5"x2.5" (63x63mm)
30 plates
$125

S4P-10225

4"x5" (102x127mm)
25 plates
$260

Dichromated Gelatin for High Diffraction Efficiency

A grainless emulsion, the PFG-04 dichromated gelatin recording material has extremely high resolving power and a diffraction efficiency of >75%. It has sensitivity that reaches 100mJ/cm2 in the blue spectrum range and 250mJ/cm2 in the green spectrum. The PFG-04 is designed for making Denisyuk-type reflection holograms using CW laser radiation (488nm, 514nm - Argon laser). Available in only in plate format.

Characteristic Specification
Spectral sensitivty 415-514nm
Average grain size Grainless
Resolving power High (grainless)
Exposure peak sensitivity 100mJ/cm2 (blue), 250mJ/cm2 (green)
Emulsion thickness 16-17µ
Glass thickness 2.4mm
Diffraction efficiency 75%
Processing Details

See spectral sensitivity curves

How to Process

Unlike silver halide materials, the PFG-04 dichromated gelatin emulsion requires special processing techniques. The PFG-04 cannot be processed using the JD developer kits.

There are various methods for processing PFG-04, one of such techniques is described. For additional details, see Hans Bjelkhagan’s book SILVER HALIDE MATERIALS FOR HOLOGRAPHY AND THEIR PROCESSING (Springer-Verlag, Second Ed. 1996).

  1. Thermal Hardening after exposure (100°C) - Depending on the layer freshness.
  2. Cooling to Room temperature.
  3. Bathing in running filtered water - 3mins.
  4. Bathing in 50% Isopropyl Alcohol solution for 2 - 3 mins.
  5. Bathing in 75% Isopropyl Alcohol solution for 2 - 3 mins.
  6. Bathing in 100% Isopropyl Alcohol solution for 2 - 3 mins.
  7. Drying in a desiccator. (100°C) for 60 mins.
  8. Emulsion layer preservation using optical anhydrous adhesive and protective glass.

The processing solution temperatures must not exceed 20°C for fresh layers. If your hologram appears "milky", decrease the processing solution temperature or prolong the thermal hardening period.

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