Hi, I just read your article titled "Determination of exposing time of
holograms" and I have to say that it's very good, but I feel there's
something missing. Shouldn't the wavelength of the laser used be taken into
consideration when making the calculations? I have a laser diode with a
wavelength at 650nm and intend to use it on PFG-03M photoplates (I know it's
a little far from 633nm, but I'm told it should be good enough.). I suppose
I will have to expose my plate longer than if it was a 633nm, correct? How
would I do this? Slavich.com has a graph showing the sensitivity of the
plate at different wavelengths, how do I use it?Thank you very much in advance for your time, really appreciate it!
Nicolas
Exposure Time
Exposure Time
Of course, the sensitivity of silicon photodiode have increase when wavelenght of laser is increase too. I shell try show diagram of sensitivity of silicon photodiode and I can give only table for sensitivity ("S" mcA/mcW, as in my article) now:
488 - 0,05
514 - 0,08
633 - 0,25
650 - 0,3
S=0,3 for calculation for silicon photodiode for wavelenght 650 nm.
Need remember, that sensitivity of photoplates PFG-03m maybe some reduce, when you use wavelenght 650 nm instead 633 nm.
488 - 0,05
514 - 0,08
633 - 0,25
650 - 0,3
S=0,3 for calculation for silicon photodiode for wavelenght 650 nm.
Need remember, that sensitivity of photoplates PFG-03m maybe some reduce, when you use wavelenght 650 nm instead 633 nm.
Exposure Time
For determining exposure times, have a look at my site:
http://perso.wanadoo.fr/redlum.xohp/hol ... sures.html
http://perso.wanadoo.fr/redlum.xohp/hol ... sures.html