Search found 184 matches

by a_k
Sat May 24, 2014 8:07 am
Forum: Optics
Topic: change laser polarization
Replies: 16
Views: 22522

change laser polarization

35mW at 405nm is plenty in any case. You'll get sensitivities around 2mJ/cm2 DCG (2g gelatin / 0.085g Amdi / 16.5ml H20).
by a_k
Fri May 23, 2014 6:47 pm
Forum: Optics
Topic: change laser polarization
Replies: 16
Views: 22522

change laser polarization

Correction: The two lasers are described as having equal wavelength, not sure how equal they really are: http://www.omicron-laser.de/english/lasers/diode-lasers/high-power-multiline/dual-diode.html The diode lasers of the Bluephoton® / Greenphoton® / Redphoton® DualDiode Series are temperature-stabi...
by a_k
Fri May 23, 2014 1:14 pm
Forum: Optics
Topic: change laser polarization
Replies: 16
Views: 22522

change laser polarization

You are correct, if your intention is two record two holograms simultaneously. But if the intention isn't to record a pair, you would need to select one of the frequencies and discard the other one. Isn't that so?
by a_k
Thu May 22, 2014 6:05 pm
Forum: Optics
Topic: change laser polarization
Replies: 16
Views: 22522

change laser polarization

Hello Marcin,

The laser you mention contains two laser diodes with different wavelengths, one horizontally polarised, the other vertically polarised, combined in one beam. I think that you'll need to use a polarisation filter to select one of the two sources.
by a_k
Sat May 17, 2014 1:58 pm
Forum: holoforum administration
Topic: Disable iphone theme?
Replies: 3
Views: 7747

Disable iphone theme?

Hello HoloM,

Sorry about that. The issue you noticed could be reproduced; it has been fixed. You should be able to see/edit your profile settings now. I have disabled the mobile browser for your account.
by a_k
Fri May 16, 2014 7:12 am
Forum: Gallery
Topic: Dinesh we should start "the Porcelain Cat Group"
Replies: 42
Views: 21042

Dinesh we should start "the Porcelain Cat Group"

I hope you all have a good time with the cats. Please don't forget to let us know how it all goes.
by a_k
Wed May 14, 2014 10:08 am
Forum: holoforum administration
Topic: Disable iphone theme?
Replies: 3
Views: 7747

Disable iphone theme?

You can disable the mobile browser in your profile like this:

User Control Panel -> Profile -> Edit Profile -> Disable Mobile Browser: yes ( <- this is the last option at the bottom of the page)
by a_k
Fri May 09, 2014 2:03 pm
Forum: holoforum administration
Topic: Forum database issue
Replies: 3
Views: 7585

Forum database issue

Thanks, Joe.
by a_k
Fri May 09, 2014 1:30 pm
Forum: holoforum administration
Topic: Forum database issue
Replies: 3
Views: 7585

Forum database issue

Hello everyone, There has been a database error making access to the forum impossible for the last 7 days. I am sorry for the long interruption of the forum service. Due to sickness i was unable to give the forum the necessary attention. My thanks to Joe and Martin for bringing the problem to my att...
by a_k
Mon Apr 07, 2014 11:18 am
Forum: holoforum administration
Topic: Issues with forum server
Replies: 3
Views: 7157

Issues with forum server

Thank you for reporting. I wasn't able to pinpoint the cause for the mismatch, both domain names should point to the same ip. If you experience this issue again, it would be much appreciated if you could let me know.

Thanks,
Ahmet