Ultimate 08nm / 15nm holographic recording materials

RECOMMENDED PROCESSING FOR CONTINUOUS LASERS:

Ultimate 08nm after developer pale orange color (exposure 200µJ/cm² HeNe)	in the bleach after 2 minutes the hologram starts to appear "floatting" in the bath (I have put a black background to see it better)	after the bleach totaly transparent and no diffusion - The red sensitive material have still the blue color of the sensitiser dye.	after the bleach when you look through the plate	when dried (so bright that my digital camera was saturating!)
Ultimate 15nm after developer black color where exposed, transparent where not exposed (see the uper corner) (exposure 90µJ/cm²HeNe)				Ultimate 15 -70 (preshifted) recorded with an HeNe and reconstructed in white light

Exposure:
Direct expose the plate removed from the box (after a stabilization period of 30 minutes at the room temperature, if the plate was just removed from a fridge). For a given power of your laser, you must adjust precisly the exposure time, which is the ONLY parameter I recommand to play with. Extremely bright images, totaly noise free, with more 90% diffraction efficiency, even with Denisyuk records, can be obtained with ULTIMATE 08nm plates , if you make the correct expose time.

Safe Developer : We have adjusted our emulsion for the sold developer.
It is a fine grain developer, totaly safe to use, delivered concentrated. For a 4"x5" plates/film, take from the concentrated bottle just before use 5cc + 50ml water . For a 30x40cm, take 40ml +400ml water. check the temperature before processing, as the processing time will vary with the temperature. After processing, through away or re-use it during 6 hours (next processing can be longer).
Processing time: typicaly 6 minutes @ 20°C .

The developing may start only after 20-30 seconds when new plates or immediatly with older plates . It gives a pale yellow/orange color with Ultimate 08nm, dark red to black with Ultimate 15, due to the very small grain size (Mie diffusion), much smaller than any emulsion you used before. It is normal that you get NO "DENSITY" on ultimate 08, so do not expose or try to process more. Even some very pale yellow plates after developer on ultimate 08nm give uncreadible bright holograms.

Rince: in tap water 30 seconds.

Safe Bleach: just put the plate in the bath. Very slow agitation until total transparency. (between 5 and - 6 minutes usualy). If the plate looks milky at the end, you are overexposed
Rince: in tap water for 2 minutes

Drying:
solution 1 : no contact (for mastering)
natural drying. No contact is made with the emulsion
step 1: Rinse 1 minute in distilled or demineralized water with some drops of Kodak fotoflo
step 2: Let it dry vertical during some minutes
(other solution without contact: alcool (ethanol) 50% 2 minutes + 100% 2minutes)
solution 2 :
fast drying but be carefull not to scratch the emulsion
step 1: Rince 1 minute in distilled or demineralized water + some drops of fotoflo (Kodak)
step 2: squize the film/plate with a soft tisue and fast dry it with hair dryer

Ultimate 25nm holographic recording material

RECOMMENDED PROCESSING FOR PULSED LASERS:

preliminary recommandations:

we get very good holograms with our ruby and Yag cameras using this processing:

developer: SM6 : Yag 2 minutes at 20°C (exposure 10µJ/cm²) - Ruby 4,5 minutes at 20°C (20µ/cm²)
rince: one minute
bleach: Fe3 EDTA until clear
rince and dry

SM6:

EDTA bleach
Ferric sulfate: 30g
disodium EDTA: 30g
potassium bromide: 30g
sulfuric acid: 10ml