Polygrama Film

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Sergio

Polygrama Film

Post by Sergio »

POLYGRAMA


Polygrama updated the film model photopolymer for security items, green sensitivity is available with back adhesive or (PET Sandwish) with print acceptable coating on both sides, samples are bar coated but long rolls can be outsource service coated with emulsion in US and UK. Below are some images and useful information. Samples are available of both liquid and dry photopolymers with CC or PayPal® payment via http://www.xoom.com .

Regards,

Sergio Oliveira - Polygrama

sergio at polygrama dot com

Sample information, Croma Green

Sample size: Sheet, 30cm x 10 cm width

Sample setup: 75µm Polyester base with 2µm Optical Adhesive and 20µm Polyester siliconized cover (Remove to laminate film)

30µm Polygrama Photopolymer (PPP)

20µm Polyester cover.

After holographic exposure post - cure with UV light (365nm)!

Optical data of PPP + Base

Sensitizers type: Green, tested at 532nm
Haze (Polymer): <0.1%
Transmission at λ = 512-532 nm: 50% minimum
Transmission at λ = 633 nm: 91%

Holographic data

Dosage for exposure: 20mJ/cm²
Diffraction efficiency: >95% (green)
Δn (Kogelnik): 0.012

Image
Fig. 1- Absorbance curve. Type “B” Polymer.

ImageImage

ImageImage

Photos:

Transmission Hologram/TR hologram laminated on Glass and Polymer Film

Reflection "Denisyuk" Hologram - Film laminated onto Glass/Interferometric images on liquid polymer
Sergio

Polygrama Film

Post by Sergio »

Note the above curve will give a pink-orange colour film different from the photo.

The SM-TR S1 series were successfully tested with interferometry:

Characterization and Application of New Photopolymer Recording Media for
Usage in Holography.

Ing. Vít Lédl (a), Ing. Milan Květoň (b)
a Technical University of Liberec, Faculty of Mechatronics,
b Czech Technical University in Prague, Faculty of Nuclear Sciences and
Physical Engineering
http://prague2008.photon-czsk.org/
http://www.polygrama.com/Downloads/Ledl ... e_2008.pdf

The new structure is adequate to form a hugged material with enhanced
adhesion to plastics.

Sergio.
Sergio

Polygrama Film

Post by Sergio »

Bump up.

Polygrama optimized the liquid photopolymer to a form liquid-gel with viscosity 10000~18000 cps or more. So stable transmission gratings (up to 1mm thickness at high viscosity) and reflection holograms can be recorded with good laser beam quality to form excellent optical HOE'S at low cost per unit.

It can be delivered as separated parts (A + B) which are completely insensitive to radiation and when mixed has a ~3mJ/cm² sensitivity. Green, red or blye cyanine dye sensitivity are available and mixed form a full panchromatic emulsion.

New published results will be available at Photonic Journals this year, but the system is now available at minimum 15ml ordering at €10 per ml.

Film samples with this system will be available soon. Below are some characteristics of SM-635R S1 series:


Sensitizer type

Red, tested at 635 nm

Haze (Polymer): <0.3%

Transmission at λ = 600-700 nm: 50% minimum

Transmission at λ = 500 nm: 91%


Holographic data

Dosage for exposure 633 nm: 1 to 3 mJ/cm² @1 mW/cm²

Diffraction efficiency: > 95% (red)

Δn (Kogelnik): ~ 0.06


Regards,

Sergio Oliveira
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