Hi Din .
Mail is blocked for you.
The film came to you ?
I hope all is well.
Please let me know the results of testing.
Valery.
Colored material for holography VEColor
Re: Colored material for holography VEColor
Yes, got it, thanks. We're busy now, but I'll test as soon as I can.
You mean my email? I don't know why mail is blocked. I didn't block it. Issues with server, probably.
Dinesh
You mean my email? I don't know why mail is blocked. I didn't block it. Issues with server, probably.
Dinesh
Re: Colored material for holography VEColor
Hi Dinesh
You made color film test ?
Valery.
You made color film test ?
Valery.
Re: Colored material for holography VEColor
Next week. Will post results.
By the way, I use CWC2 + PBU for development. Is this OK?
Also, what are the sensitivities for the three colours (633, 535, 457).
By the way, I use CWC2 + PBU for development. Is this OK?
Also, what are the sensitivities for the three colours (633, 535, 457).
Re: Colored material for holography VEColor
It's hard to say, but I think that within 30-35 J / m. sq.By the way, I use CWC2 + PBU for development. Is this OK?
Also, what are the sensitivities for the three colours (633, 535, 457).
I work for 633, 532 and 488 nm, the sensitivity is about the same for each wavelength.
Normally I use the developer GP-2, but the SM-6 with whitening works well.
In any case, you need to select the exposure for each developer and the type of holograms.
When working with 15-20 mW and a spot of about 20 cm in diameter exposure was 20-30 seconds for the developer GP 2 (10 min time at 20- 22 ° C)
Re: Colored material for holography VEColor
Valery,
I tried the film. I started with an exposure of 400 uJ for all three wavelengths . I got nothing. I kept increasing the exposure. At about 5 mJ, I got a dim image. All three wavelengths were present and about equal, but very dim. I then increased the exposure to 7 mJ, and got nothing again. Clearly, then, 7 mJ was overexposed. So, it looks like 5 mJ was the ideal exposure. But, if such a high exposure was necessary to get anything at all, I'm assuming that the grain size is very small. In this case, it may be necessary to use a physical developer. I used CWC2 and PBU. You mention GP-2 and SM-6, which, I believe, are physical developers.
I don't have the chemicals to make a physical developer, but I'll keep on testing.
I tried the film. I started with an exposure of 400 uJ for all three wavelengths . I got nothing. I kept increasing the exposure. At about 5 mJ, I got a dim image. All three wavelengths were present and about equal, but very dim. I then increased the exposure to 7 mJ, and got nothing again. Clearly, then, 7 mJ was overexposed. So, it looks like 5 mJ was the ideal exposure. But, if such a high exposure was necessary to get anything at all, I'm assuming that the grain size is very small. In this case, it may be necessary to use a physical developer. I used CWC2 and PBU. You mention GP-2 and SM-6, which, I believe, are physical developers.
I don't have the chemicals to make a physical developer, but I'll keep on testing.
Re: Colored material for holography VEColor
Hi
This is done on VEColor /
The developer of GP-2 with fixing. Laser 633 nm.
This is done on VEColor /
The developer of GP-2 with fixing. Laser 633 nm.
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