Colour Ultra-fine grain photomaterials for holography

 


Availability
 
Available coated on glass plates. The largest plate size available as a standard size is 406x300 mm. The standard glass thickness is 2.5 mm. Custom glass substrates sizes are available for the coating on request.

Guaranteed material lifetime - 6 months

 
PFG-03C - Panchromatic emulsion

 

This material is designed for the production of full-colour reflection holograms using CW laser radiation in the blue (457nm -Argon laser), green (514nm -Argon laser) and red (633nm -HeNe laser).


A spectral sensitivity curve of the PFG-03C material is shown in Fig.1. Diffraction efficiency versus exposure is shown in Fig.3. The maximum diffraction efficiency in the blue region is >25% and in the green and red regions >45%.


Typical sensitivity values for PFG-03C are 2mJ/cm2 and 3mJ/ cm2 for the blue and red/green regions respectively. The grain size distribution curve for both PFG-03C is shown on Fig.2. Difraction efficiency - on Fig. 3.

 

Recommended processing is given in table below.

 

Figure1: Spectral sensitivity curve for PFG-03C (gray)
and PFG-03M (black).
 
Figure 2 : PFG-03 grain size distribution curve.
 

Figure 3: PFG-03C diffraction efficiency curve.
 
PFG-03M - Red sensitive emulsion
 

This material is designed for reflection hologram recording using CW radiation in the red spectral range (633nm - HeNe laser and 647nm - Krypton laser). The spectral sensitivity curve of the material is shown in Fig.1, diffraction efficiency - on Fig. 3. Grain size of this material is 20-30nm.


Peak emulsion sensitivity is around 1.5-2mJ/cm2. Recommended processing is given in table below.

 
Processing and Handling Recommendations:
 
- Unseal and process in indirect dark green non-actinic light.

- Temperature of processing solutions - 20±2°C.

- Storage condition: Humidity 45% and 4 deg. Celsius.

 

Table below shows recommended processing scheme for use with PFG-03.

 

Procedure Mastering and Copying with Pulsed Radiation
Exposure: 
ORIGINATING  
MASTERING
 20-40 microJ/cm2
COPYING30-60 microJ/cm2

Development/

Hardening

SM-6 + Formalin 37% (10 ml to 1 liter of developer) , 2min
WashWater, 1-2min
BleachPBU-Amidol until clear (~2-3 min)
WashWater 5 min.
Final WashWater with wetting agent (Agepon) 1min
DryingSlow Air

 

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2009.01
Geola is starting to sell photoemulsions coated onto Polyester base