Figure 1: Grain size distribution for PFG03M.
Figure 2: Characteristic curve for
PFG03M.
Figure 3: Spectral sensitivity of the PFG-03M
material. |
This
material is designed for reflection hologram recording using CW
radiation in the red spectral range (633nm - HeNe laser and
647nm - Krypton laser). This emulsion has forth times smaller
grains than VRP-M and PFG-01 (figure1).
Therefore, it is hundredths time less sensitive than fine grain
emulsions VRP-M and PFG-01. Ultra fine grain emulsions provide a
bit more clear image than fine grain ones, but are very soft and
are not recommended for hobbyists and beginners due to quite
difficult processing and shorter life time. The Characteristic
curve is shown on Fig.2. Peak emulsion
sensitivity is around 1.5-2mJ/cm2. The spectral
sensitivity curve of the material is shown in Fig.3.
Recommended processing is given in table1,
recommended chemistry - in table2.
|
Exposure |
1.5 -
2.0 mJ/cm2 |
Hardening |
Hardener,
2-3 min |
Wash |
Water,
1-2 min |
Development |
GP-2,
10 - 15min |
Wash |
Water,
1-2 min |
Fixing |
Fixer,
2 min |
Wash |
Water,
1-2 min |
Drying
(Reflection Holograms). Note that temperature must be lower than
19oC. |
50%,75%
and 96% Ethyl Alcohol, 2mins each bath |
Table 1: Recommended
processing for PFG-03M
Hardener |
Formalin
37% |
10ml |
Potassium
Bromide |
2g |
Sodium
Carbonate |
5g |
Water |
to 1L |
GP-2
Developer - Concentrated solution: |
Methyl
Phenidone |
0.2g |
Hydroquinone |
5g |
Sodium
Sulphite (Anhyd.) |
100g |
Potassium
Hydroxide |
5g |
Ammonium
Thiocyanate |
12g |
Water |
to 1L |
Working
solution: 40ml GP-2+1L H20 |
Fixer
|
Sodium
Thiosulphate (cryst.) |
160 g |
Potassium
Metabisulphite |
40
g |
Water |
to 1L |
Table 2: Recommended
Chemistry for PFG-03M.
|